betaworks makes seed-stage investments in the ecosystem of the realtime web. To us, seed investing means "first money in." Our typical investment size is $100,000-200,000. We sometimes invest as part of a syndicate of angels and early stage VCs.
Our requirements from an investment perspective are simple, though narrow. Investments must be early stage, heavily tech focused, and have a working (public or private) prototype. We are a powerpoint-free zone.
DailyBooth, Clipboard, GroupMe (acquired by Skype), Tumblr, TweetDeck (acquired by Twitter), Summize (acquired by Twitter), Twitterfeed (acquired by bitly), OnSwipe, Just Me
adkeeper, Backupify, Fluidinfo, Lotame, UberMedia, Superfeedr, yieldbot
Covestor, StockTwits, ideeli, gdgt, venmo
exfm, Hot Potato (acquired by Facebook), OMGPOP, someecards, Songkick, Star.me, Onegoodmovie
ChallengePost, Kickstarter, UserVoice, Mixel, Show me, Piictu, Veri
Mob.ly (acquired by Groupon), Outside.in (acquired by AOL), ditto, Trazzler