Not long been released.
Gaikai is now on Facebook. Play demos of top titles such as Witcher 2, Nfs the Run, Bf2, Magicka, Farming simulator!! Live inside Facebook. Beats playing those 2d "mobile phone" type games for a change. Invite your friends into Gaikai and see what they're playing. This is only a beta so expect it to improve over time, more titles etc.
Before you get all excited, you need around a 10mb internet connection as minimum before you can play decently (of course to stream hd video of games live you need this sort of speed so those that fall short please take this into account). I've played Witcher 2 on it and its highly responsive with my mouse. More so than ever before.
If you're not a facebook user, then be sure to load up their webpage where you will be able to play games there. No registration required. Also theres quite a few more titles to choose from here. http://www.gaikai.com/games/
For those familiar with Onlive, Gaikai is similar, minus the registration and app required to download. Its all done inside your web browser in real time.
If any of the games fail to load, update both your Flash player and Java and restart your web browser. Get them both from here http://get.adobe.com/flashplayer/ and http://www.java.com/getjava/
Please remember guys this is a freebie so its not going to cost you anything. Its a smart way to keep your social networking open while hammering away at a decent console title.
Video of interview with the Ceo of Gaikai, David Perry - http://videos.webpronews.com/2012/04/gaikai-taking-gaming-to-a-new-level/?utm_source=Gaikai+Beta+Signup&utm_campaign=aa7df437b8-W2EE+Beta+List&utm_medium=email
To play? Click Go to Deal to the right, login to Facebook, add the app, and then choose a game, wait around 20 seconds for it to load.. Simples..