# I am the Watcher. I am your guide through this vast new twtiverse.
# 
# Usage:
#     https://watcher.sour.is/api/plain/users              View list of users and latest twt date.
#     https://watcher.sour.is/api/plain/twt                View all twts.
#     https://watcher.sour.is/api/plain/mentions?uri=:uri  View all mentions for uri.
#     https://watcher.sour.is/api/plain/conv/:hash         View all twts for a conversation subject.
# 
# Options:
#     uri     Filter to show a specific users twts.
#     offset  Start index for quey.
#     limit   Count of items to return (going back in time).
# 
# twt range = 1 43627
# self = https://watcher.sour.is?uri=https://txt.sour.is/user/all/twtxt.txt&offset=39727
# next = https://watcher.sour.is?uri=https://txt.sour.is/user/all/twtxt.txt&offset=39827
# prev = https://watcher.sour.is?uri=https://txt.sour.is/user/all/twtxt.txt&offset=39627
{@https://feeds.twtxt.net/lobste_rs/twtxt.txt>#k5vvrga} The Be Book...in lovely HTML ⌘ https://www.haiku-os.org/legacy-docs/bebook/
{@https://feeds.twtxt.net/cncf/twtxt.txt>#eaklpza} Set up Your K3s Cluster for High Availability on DigitalOcean ⌘ https://www.cncf.io/blog/2020/12/12/set-up-your-k3s-cluster-for-high-availability-on-digitalocean/
{@https://feeds.twtxt.net/lobste_rs/twtxt.txt>#6ffcksa} More batteries included with emacs ⌘ https://karthinks.com/software/more-batteries-included-with-emacs/
{@https://feeds.twtxt.net/slashdot/twtxt.txt>#vuxml3a} Boston Biotech Conference Led To 245,000 COVID-19 Cases Across US ⌘ http://rss.slashdot.org/~r/Slashdot/slashdot/~3/d7Oa4TT5NQ0/boston-biotech-conference-led-to-245000-covid-19-cases-across-us
{@https://feeds.twtxt.net/lobste_rs/twtxt.txt>#2kex7iq} systemd + SELinux = (fire emoji) ⌘ https://www.die-welt.net/2020/12/systemd-%2B-selinux/=
{@https://feeds.twtxt.net/lobste_rs/twtxt.txt>#7a2t3hq} How the Slowest Computer Programs Illuminate Math’s Fundamental Limits ⌘ https://www.quantamagazine.org/the-busy-beaver-game-illuminates-the-fundamental-limits-of-math-20201210/
{@https://feeds.twtxt.net/slashdot/twtxt.txt>#be3kvfq} Facebook Says Hackers Backed By Vietnam's Government Are Linked To IT Firm ⌘ http://rss.slashdot.org/~r/Slashdot/slashdot/~3/WNCNxMPYjO0/facebook-says-hackers-backed-by-vietnams-government-are-linked-to-it-firm
{@https://feeds.twtxt.net/unexplained_mysteries/twtxt.txt>#ieh6p6a} 'Zodiac Killer' cipher solved after 51 years ⌘ https://www.unexplained-mysteries.com/news/341783/zodiac-killer-cipher-solved-after-51-years
{@https://feeds.twtxt.net/lobste_rs/twtxt.txt>#d4hacqq} Did Dream Fake His Speedruns ⌘ https://www.youtube.com/watch?v=-MYw9LcLCb4
{@https://tilde.town/~mox/randomwiki.txt>#6yhgflq} Nentershausen, Hesse
{@https://john.colagioia.net/twtxt.txt>#vnt6vfq} On the blog: Free Culture Book Club — Monkaa https://john.colagioia.net/blog/2020/12/12/monkaa.html #freeculture #bookclub
{@https://feeds.twtxt.net/lobste_rs/twtxt.txt>#55s6ihq} Popular posts from leaky bug-tracking systems ⌘ https://rachelbythebay.com/w/2020/03/05/bugs/
{@https://twtxt.net/user/dilbert/twtxt.txt>#o3lsvrq} Read The Article ‣ https://dilbert.com/strip/2020-12-12
{@https://feeds.twtxt.net/slashdot/twtxt.txt>#s3m5lfa} The Zodiac Killer's Cipher Has Been Solved After 51 Years ⌘ http://rss.slashdot.org/~r/Slashdot/slashdot/~3/YVseeFuoIFE/the-zodiac-killers-cipher-has-been-solved-after-51-years
{@https://twtxt.net/user/prologic/twtxt.txt>#hzr6p5a} @off_grid_living (#bkzhdjq) Safe travels ! 👌
{@https://twtxt.net/user/off_grid_living/twtxt.txt>#bkzhdjq} On our way to Mum in Tenterfield, for early Xmas, and see grandkids.\nStaying at Toowoomba for now
{@https://feeds.twtxt.net/lobste_rs/twtxt.txt>#3522h3q} How the message 340 of the Zodiac Killer was cracked ⌘ https://www.youtube.com/watch?v=-1oQLPRE21o
{@https://feeds.twtxt.net/lobste_rs/twtxt.txt>#3267llq} Do You Have Any Offline Programming Techniques and Tools? ⌘ https://lobste.rs/s/ik1apx/do_you_have_any_offline_programming
{@https://feeds.twtxt.net/lobste_rs/twtxt.txt>#nis2dka} Aiming for correctness with types ⌘ https://fasterthanli.me/articles/aiming-for-correctness-with-types
{@https://feeds.twtxt.net/unexplained_mysteries/twtxt.txt>#brmko3q} Newton's 'heretical' notes on the apocalypse ⌘ https://www.unexplained-mysteries.com/news/341792/newtons-heretical-notes-on-the-apocalypse
{@https://feeds.twtxt.net/lobste_rs/twtxt.txt>#42ptnxa} Boost Framework Version 1.75.0 released ⌘ https://www.boost.org/users/history/version_1_75_0.html
{@https://feeds.twtxt.net/slashdot/twtxt.txt>#v3ex52q} Is Warner Bros' Shift To Streaming New Movies 'A Great Danger'? ⌘ http://rss.slashdot.org/~r/Slashdot/slashdot/~3/4s-zRS0sZVc/is-warner-bros-shift-to-streaming-new-movies-a-great-danger
{@https://feeds.twtxt.net/lobste_rs/twtxt.txt>#3xoq24a} Bit Manipulation with C++20 ⌘ http://www.modernescpp.com/index.php/bit-manipulation-with-c-20
{@https://feeds.twtxt.net/lobste_rs/twtxt.txt>#emzuava} ARM MacBook vs Intel MacBook ⌘ https://lemire.me/blog/2020/12/11/arm-macbook-vs-intel-macbook/
{@https://txt.sour.is/user/twtxt/twtxt.txt>#dtm3a2q} WEBMENTION: @xuu on https://twtxt.net/twt/xkpbn6a
{@https://twtxt.net/user/prologic/twtxt.txt>#xkpbn6a} @xuu Just saw your PR, Thanks! I _think_ I've covered that change already in master 😀
{@https://feeds.twtxt.net/slashdot/twtxt.txt>#jaiih7a} FDA Approves Pfizer/BioNTech Covid-19 Vaccine For Emergency Use in America ⌘ http://rss.slashdot.org/~r/Slashdot/slashdot/~3/kuOXtyvf2BQ/fda-approves-pfizerbiontech-covid-19-vaccine-for-emergency-use-in-america
{@https://pbat.ch/twtxt.txt>#sgdhz3a} with the addition of crate in weewiki, I finally found an opportunity to add some words to the @sqlar page #updates
{@https://feeds.twtxt.net/slashdot/twtxt.txt>#t6akt2q} Florida Governor Defends Police Raid On COVID Data Whistleblower ⌘ http://rss.slashdot.org/~r/Slashdot/slashdot/~3/ll0YUhKrtNA/florida-governor-defends-police-raid-on-covid-data-whistleblower
{@https://twtxt.net/user/prologic/twtxt.txt>#d6bmfja} Hello @kris451 ! 👋 Welcome to Twtxt! 🤗
{@https://twtxt.net/user/twtxt/twtxt.txt>#d2taiyq} FOLLOW: @kris451 from @prologic using twtxt/0.1.0@958d202
{@https://twtxt.net/user/prologic/twtxt.txt>#uvisvvq} @lyxal (#qhj3u4a) What do you know or have learned that you feel you could contribute to? In non-tech contributions you _could_ spawn your own Pod, help me build more cross-pod features as a "beta" tester of said features. For example if you spawned your own Pod, it _is_ useful to be able to migrate your "feed" from one Pod to another.
{@https://feeds.twtxt.net/slashdot/twtxt.txt>#pavgccq} Google Will Let You Limit the Alcohol and Gambling Ads You See ⌘ http://rss.slashdot.org/~r/Slashdot/slashdot/~3/u78Tjduzex8/google-will-let-you-limit-the-alcohol-and-gambling-ads-you-see
{@https://feeds.twtxt.net/lobste_rs/twtxt.txt>#gbeazua} Announcing Rizin ⌘ https://rizin.re/posts/announcing-rizin/
{@https://feeds.twtxt.net/slashdot/twtxt.txt>#voqvxqa} Norman Abramson, Pioneer Behind Wireless Networks, Dies At 88 ⌘ http://rss.slashdot.org/~r/Slashdot/slashdot/~3/hJ6LfoC8_VY/norman-abramson-pioneer-behind-wireless-networks-dies-at-88
{@https://twtxt.net/user/twtxt/twtxt.txt>#slicx6q} FOLLOW: @kris451 from @kris451 using twtxt/0.1.0@958d202
{@https://feeds.twtxt.net/slashdot/twtxt.txt>#mz3s3ea} Key People Are Leaving Facebook and Torching the Company In Departure Notes ⌘ http://rss.slashdot.org/~r/Slashdot/slashdot/~3/Ij_ErWs5VCc/key-people-are-leaving-facebook-and-torching-the-company-in-departure-notes
{@https://twtxt.net/user/lyxal/twtxt.txt>#qhj3u4a} @prologic seeing as how I don't know Go or web tech, how could I contribute to twtxt?
{@https://twtxt.net/user/twtxt/twtxt.txt>#kcj2inq} FOLLOW: @prologic from @markwylde using twtxt/0.1.0@db7e347
{@https://twtxt.net/user/twtxt/twtxt.txt>#47r7eua} FOLLOW: @prologic from @markwylde using twtxt/0.1.0@db7e347
{@https://twtxt.net/user/prologic/twtxt.txt>#k7j3bma} @xuu (#4to7qbq) Haha let’s keep it simple ! I always have two goals in mind a) compatibility with plain old Twtxt or simple enough to adopt and b) easy for the average non-technical person
{@https://feeds.twtxt.net/slashdot/twtxt.txt>#ueyyxzq} Big Tech Firms To Face 6% Fines If Breach New EU Content Rules ⌘ http://rss.slashdot.org/~r/Slashdot/slashdot/~3/e3b11ty1bY8/big-tech-firms-to-face-6-fines-if-breach-new-eu-content-rules
{@https://txt.sour.is/user/xuu/twtxt.txt>#km6m4fq} @prologic (#4to7qbq) I see.. so using an ec25519 key as identity? and some kind of certificate to define the location of a feed? or maybe a DHT like Kademlia? TwTorrent ;)
{@https://twtxt.net/user/stats/twtxt.txt>#cykifgq} 🧮 USERS:266 FEEDS:27 TWTS:7186 BLOGS:9 ARCHIVED:357443 CACHE:3311 FOLLOWERS:263 FOLLOWING:405
{@https://twtxt.net/user/twtxt/twtxt.txt>#zv5jyea} FOLLOW: @prologic from @markwylde using twtxt/0.1.0@09ee663
{@https://twtxt.net/user/twtxt/twtxt.txt>#5hghh4q} FOLLOW: @prologic from @markwylde using twtxt/0.1.0@09ee663
{@https://twtxt.net/user/prologic/twtxt.txt>#55u3g7q} @xuu if we want to focus on trying to standardize some kind of Twtxt “identity” \nthen that’s a different conversation, my only personal take on this is to use EDCH25519
{@https://twtxt.net/user/prologic/twtxt.txt>#b2ubyga} (#4to7qbq) or in other words it’s only a content post addressing not an identity of the user
{@https://twtxt.net/user/prologic/twtxt.txt>#pywdnna} (#4to7qbq) also it’s worth noting but the hush of previously created content doesn’t actually change so if you change your feed URL it only affects you post going forward
{@https://feeds.twtxt.net/slashdot/twtxt.txt>#kjwj54q} How the Nature Conservancy, the World's Biggest Environmental Group, Became a Dealer of Meaningless Carbon Offsets ⌘ http://rss.slashdot.org/~r/Slashdot/slashdot/~3/1UxjelHy-kM/how-the-nature-conservancy-the-worlds-biggest-environmental-group-became-a-dealer-of-meaningless-carbon-offsets
{@https://twtxt.net/user/prologic/twtxt.txt>#oa6tfua} @xuu (#4to7qbq) Hmmm The problem with using the domain is there’s no standardization around where you can host your feed
{@https://txt.sour.is/user/xuu/twtxt.txt>#4sslrgq} @prologic (#zbpsfnq) kinda like how MX records work.
{@https://txt.sour.is/user/xuu/twtxt.txt>#jie3uwa} @prologic (#zbpsfnq) My thoughts on it being if they switched from a different way of hosting the file or multiple locations for redundancy..\n\nI have an idea of using something like SRV records where they can define weighted url endpoints to reach.
{@https://txt.sour.is/user/xuu/twtxt.txt>#4to7qbq} @prologic just an off the wall question about hashes. why not use the time+message as it was in the original twtxt.txt file? is it because it's just not store anyplace?\n\nalso how set in stone is using user+url? vs user@domain? the latter would mean the url could change without invalidating the hash.
{@https://twtxt.net/user/prologic/twtxt.txt>#44p4pyq} (#mxzusta) I wonder if we can add a read it later feature or bookmark feature to Twtxt? 🤔
{@https://twtxt.net/user/prologic/twtxt.txt>#6tse5ba} @antonio (#mxzusta) Yeah I found it 🤣
{@https://feeds.twtxt.net/luke_smiths_blog/twtxt.txt>#kn5izma} New website ⌘ https://lukesmith.xyz
{@https://twtxt.net/user/antonio/twtxt.txt>#asiadkq} @prologic (#mxzusta) Wallabag
{@https://twtxt.net/user/prologic/twtxt.txt>#n3y4ldq} (#itaigmq) See comments on this PR https://github.com/jointwt/twtxt/pull/288\n\nSorry for any inconvenience caused, I made a decision that it wasn’t really worth reserving backwards compatibility. 🤗
{@https://twtxt.net/user/prologic/twtxt.txt>#itaigmq} 📣 FYI existing conversations are broken in that the links to them no longer work since we merged a breaking change to how Twts are hashed and addressed.
{@https://twtxt.net/user/prologic/twtxt.txt>#2iclhsq} (#wpfahca) Yeah 🤣
{@https://twtxt.net/user/adi/twtxt.txt>#mqvywea} @prologic (#wpfahca) You wrote something 50 minutes ago, did you take a nap? 😛
{@https://feeds.twtxt.net/slashdot/twtxt.txt>#2chtfwq} Oracle Is Moving Its Headquarters From Silicon Valley To Austin, Texas ⌘ http://rss.slashdot.org/~r/Slashdot/slashdot/~3/VpkGleMCAks/oracle-is-moving-its-headquarters-from-silicon-valley-to-austin-texas
{@https://pbat.ch/twtxt.txt>#vwgsvsa} implemented initial crate import in @weewiki. one step closer towards !sample_curation
{@https://twtxt.net/user/prologic/twtxt.txt>#wpfahca} Morning y’all 👋 😴
{@https://feeds.twtxt.net/slashdot/twtxt.txt>#pnvyo3q} Elon Musk On the Problem With Corporate America: 'Too Many MBAs' ⌘ http://rss.slashdot.org/~r/Slashdot/slashdot/~3/70rlw7hF38s/elon-musk-on-the-problem-with-corporate-america-too-many-mbas
{@https://twtxt.net/user/prologic/twtxt.txt>#ttfsk7q} @xuu (#qn4y6wa) Cool 👌
{@https://twtxt.net/user/prologic/twtxt.txt>#udjz2na} @xuu (#qn4y6wa) We _could_ do that. PR?
{@https://feeds.twtxt.net/slashdot/twtxt.txt>#5icachq} Harrison Ford Will Return in a Fifth 'Indiana Jones' Movie ⌘ http://rss.slashdot.org/~r/Slashdot/slashdot/~3/jZg9_YgDCS0/harrison-ford-will-return-in-a-fifth-indiana-jones-movie
{@https://feeds.twtxt.net/slashdot/twtxt.txt>#b45pp4q} Amazon Plans To Help 29 Million People Grow their Tech Skills With Free Cloud Computing Training by 2025 ⌘ http://rss.slashdot.org/~r/Slashdot/slashdot/~3/3Wqb17wbp9A/amazon-plans-to-help-29-million-people-grow-their-tech-skills-with-free-cloud-computing-training-by-2025
{@https://feeds.twtxt.net/lobste_rs/twtxt.txt>#bilxvvq} Software at Scale 002 - Christine Dodrill: ex-SRE, Lightspeed ⌘ https://reliability.substack.com/p/software-at-scale-002-christine-dodrill
{@https://feeds.twtxt.net/lobste_rs/twtxt.txt>#w3gpqua} Reverse Engineering the TP-Link HS110 ⌘ https://www.softscheck.com/en/reverse-engineering-tp-link-hs110/
{@https://feeds.twtxt.net/slashdot/twtxt.txt>#z25shsa} CERN is Making the Large Hadron Collider's Data More Accessible ⌘ http://rss.slashdot.org/~r/Slashdot/slashdot/~3/bYIFhujnZiU/cern-is-making-the-large-hadron-colliders-data-more-accessible
{@https://twtxt.net/user/auau65535/twtxt.txt>#5vkkv5a} サガ30周年 落書きでもいいからパロディやりたいなぁ\nさらに時間がなくなる
{@https://txt.sour.is/user/xuu/twtxt.txt>#ztxlmka} @prologic (#qn4y6wa) when i get the code up to a shareable level ill ping with what i have.
{@https://txt.sour.is/user/xuu/twtxt.txt>#i7quhsq} (#qn4y6wa) @prologic so.. convert the 4 attributes in the struct to private, add getters plus some the other methods that make sense.\n\n
o
type Twt interface {
\tTwter()        Twter
\tText()         string
\tMarkdownText() string
\tCreated()      time.Time
    ... 
}
{@https://feeds.twtxt.net/slashdot/twtxt.txt>#lazb7ha} Lockdown Gardening in Britain Leads To Archaeological Discoveries ⌘ http://rss.slashdot.org/~r/Slashdot/slashdot/~3/Y7G9_7fW5Do/lockdown-gardening-in-britain-leads-to-archaeological-discoveries
{@https://feeds.twtxt.net/lobste_rs/twtxt.txt>#ycrfyaq} How the Python object system works ⌘ https://tenthousandmeters.com/blog/python-behind-the-scenes-6-how-python-object-system-works/
{@https://john.colagioia.net/twtxt.txt>#vjtvfdq} On the blog: Tweets from 12/07 to 12/11 https://john.colagioia.net/blog/media/2020/12/11/week.html #twitter #week #socialmedia #linkdump
{@https://hecanjog.com/twtxt.txt>#esc674q} Literally just got over some kind of bad cold and now I'm feeling round 2 approaching. This is pretty normal for me around this time, but it's a bit more stressful in plague times...
{@https://feeds.twtxt.net/slashdot/twtxt.txt>#via45lq} Apple Starts Work on Its Own Cellular Modem, Chip Chief Says ⌘ http://rss.slashdot.org/~r/Slashdot/slashdot/~3/TCztt5qqs4w/apple-starts-work-on-its-own-cellular-modem-chip-chief-says
{@https://feeds.twtxt.net/lobste_rs/twtxt.txt>#ehsxlwq} CS 6120: Advanced Compilers: The Self-Guided Online Course ⌘ https://www.cs.cornell.edu/courses/cs6120/2020fa/self-guided/
{@https://feeds.twtxt.net/lobste_rs/twtxt.txt>#ldh5kya} Rust Iterator Cheat Sheet ⌘ https://danielkeep.github.io/itercheat_baked.html
{@https://feeds.twtxt.net/lobste_rs/twtxt.txt>#76afhrq} Meli, a Netlify-like platform for deploying static sites ⌘ https://github.com/getmeli/meli
{@https://feeds.twtxt.net/slashdot/twtxt.txt>#tlv4v3a} Slashdot Asks: Favorite Movies and TV Shows You Watched This Year? ⌘ http://rss.slashdot.org/~r/Slashdot/slashdot/~3/vyeoaz8-22A/slashdot-asks-favorite-movies-and-tv-shows-you-watched-this-year
{@https://feeds.twtxt.net/New_scientist/twtxt.txt>#ppl7uea} Covid-19 news: London on ‘worrying’ trajectory says public health boss ⌘ https://www.newscientist.com/article/2237475-covid-19-news-london-on-worrying-trajectory-says-public-health-boss/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home
{@https://feeds.twtxt.net/New_scientist/twtxt.txt>#co6qkuq} Should you avoid alcohol when getting a coronavirus vaccine? ⌘ https://www.newscientist.com/article/2262654-should-you-avoid-alcohol-when-getting-a-coronavirus-vaccine/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home
{@https://feeds.twtxt.net/lobste_rs/twtxt.txt>#heoltra} A Flexible Reflection System in C++: Part 1 ⌘ https://preshing.com/20180116/a-primitive-reflection-system-in-cpp-part-1
{@https://feeds.twtxt.net/lobste_rs/twtxt.txt>#6nltnga} Bug hunting in Go: The culprit is in the library ⌘ https://www.scality.com/solved/bug-hunting-in-go-the-culprit-is-in-the-library/
{@https://feeds.twtxt.net/slashdot/twtxt.txt>#wptshba} Inside the Obsessive World of Miniature Arcade Machine Makers ⌘ http://rss.slashdot.org/~r/Slashdot/slashdot/~3/4BWR_KKBRuM/inside-the-obsessive-world-of-miniature-arcade-machine-makers
{@https://feeds.twtxt.net/lobste_rs/twtxt.txt>#j6cnrja} Can developer productivity be measured? ⌘ https://stackoverflow.blog/2020/12/07/measuring-developer-productivity/
{@https://feeds.twtxt.net/lobste_rs/twtxt.txt>#kh3wntq} The future for general-purpose computing ⌘ https://lwn.net/SubscriberLink/839397/75ee2f4ef14ad80f/
{@https://feeds.twtxt.net/slashdot/twtxt.txt>#davuija} EU Member States Agree 55% Cut in Carbon Emissions by 2030 ⌘ http://rss.slashdot.org/~r/Slashdot/slashdot/~3/9GrWw0kQ8b8/eu-member-states-agree-55-cut-in-carbon-emissions-by-2030
{@https://feeds.twtxt.net/slashdot/twtxt.txt>#24jzl7q} 'Cyberpunk 2077' Finally Shows What DLSS Is Good For ⌘ http://rss.slashdot.org/~r/Slashdot/slashdot/~3/M-7K4Pru9QI/cyberpunk-2077-finally-shows-what-dlss-is-good-for
{@https://feeds.twtxt.net/cncf/twtxt.txt>#4umylsq} Why Linkerd doesn’t use Envoy ⌘ https://www.cncf.io/blog/2020/12/11/why-linkerd-doesnt-use-envoy/
{@https://feeds.twtxt.net/lobste_rs/twtxt.txt>#5qavbwq} kubectl create pizza ⌘ https://ops.tips/notes/kubernetes-pizza/
{@https://twtxt.net/user/prologic/twtxt.txt>#ewxpk2a} I just created bitcaskfs a FUSE filesystem for the Bitcask database.
{@https://feeds.twtxt.net/slashdot/twtxt.txt>#kw7k22a} CISA and FBI Warn of Rise in Ransomware Attacks Targeting K-12 Schools ⌘ http://rss.slashdot.org/~r/Slashdot/slashdot/~3/BKgZWrzJTOo/cisa-and-fbi-warn-of-rise-in-ransomware-attacks-targeting-k-12-schools
{@https://feeds.twtxt.net/lobste_rs/twtxt.txt>#gdnt3xa} Do Some ARM ⌘ https://medium.com/@simonhallam/do-some-arm-c7ddc2d59202
{@https://feeds.twtxt.net/slashdot/twtxt.txt>#b6jp2da} Twitter App Code Indicates That Live Video Broadcasting App Periscope May Get Shut Down ⌘ http://rss.slashdot.org/~r/Slashdot/slashdot/~3/nXamj_aRzXI/twitter-app-code-indicates-that-live-video-broadcasting-app-periscope-may-get-shut-down