smart
Michael Seibel (@mwseibel) — Twitter Score 259 out of 1000
Excellent
259Ranked #1,492 of 531,432 crypto accounts tracked by TwitterScore.io
Sam Altman
Balaji
Brian Armstrong
toly 🇺🇸
Nikita Bier
Kyle Samani
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About Michael Seibel's Twitter Score
Michael Seibel is a startup investor and Partner Emeritus at Y Combinator who co-founded Justin.tv / Twitch and Socialcam. Michael Seibel's Twitter Score is 259 out of 1000 (an Excellent rating) as of July 2026, ranking #1,492 (top 0.5%) among 531,432 tracked accounts.
Michael Seibel co-founded Justin.tv, which evolved into Twitch, the live-streaming platform that was acquired by Amazon for $970 million in 2014. He also co-founded Socialcam, which was sold to Autodesk for $60 million in 2012. Both ventures established him as a prominent figure in consumer internet and video streaming before he moved into early-stage investing.
Michael Seibel serves on the boards of Reddit, Dropbox, and Kalshi, the prediction markets platform. His work at Y Combinator has centered on advising and supporting early-stage founders across a wide range of sectors. Michael Seibel's account has 295,408 followers as of July 2026 and 6,102 posts, and has been active since 2007. He has been mentioned by 320 accounts, with 838 total mentions.
Who follows Michael Seibel on X?
The accounts that follow Michael Seibel include 1,600 founders, 341 angel investors, 248 influencers and 71 VCs. Among them are Balaji, Brian Armstrong, Sam Altman, Toly, Nikita Bier and Kyle Samani.
