started by Ian at Songkick but will be a lot better for your additions!
Start-ups that have contributed to this wiki include: Bime, FeeFighters, Boxed Ice, GroupSpaces, Habit Industries, Huddle, IvyLees, Playfire, Plug in SEO, Fragegg, Poll Everywhere, Smarkets, Songkick, TinyCoupon, Webjam, Echodio, Skimlinks, Wasabi Ventures, Soup.io, highdefnow, boxedup, Achilles, PicoCraft, CogniDox, edocr.com, TechBrewery/Zattoo, GetItWithMe, OnePage, Mediaroots, Clear Books, Urban Alarm, RAVN, Recurly, Solutious Inc, MobiPorter, PeerIndex, Romku, Localhaus, HotelTonight, Define My Style, :Dimples, GuideMe, Intern Avenue, TwileShare