So far, there aren't too many "name brand" applications built into the PlayBook like MySpace, Tumblr, FourSquare, Twitter, etc,.
The application demo can be viewed at 2:55."While we have really no idea when we'll start to see big name third party apps make their way to the PlayBook, an Adobe Flash demo posted to YouTube shows off what looks to be the native Facebook for PlayBook app." -CrackBerry
Now that the PlayBook has launched, what are some of your thoughts?