Good Gear Guide
In pictures: Free Android apps for BlackBerry Play...
LinkedIn for BlackBerry PlayBook
The new OS 2.0 software has some LinkedIn features built into its native Messages and Contacts applications, including the ability to see messages from LinkedIn connections and quickly find their contact information. But it doesn't offer all the functionality of the dedicated Android app. The software isn't designed for tablets, so you'll see quite a bit of blank space in the interface. But LinkedIn for Android provides a much more well-rounded LinkedIn experience than anything else I've seen on the PlayBook.
In pictures: Free Android apps for BlackBerry PlayBook, 10 best downloads