Kindle for Android 2.0 now in the Market

Amazon has released Kindle for Android version 2.  There are a bunch of new features but these are some of my favorites:  Access to newspapers and magazines, the store is improved, chapter title shows in status bar, and Froyo's move to SD is enabled now.  You can also use new social networks integration integration to let friends know what you're reading.

I'd be interested to know exactly what the social network integration shows.  Does it tell the book(s) you're reading, which page you're on, or what?  Let me know if you figure it out.  I was messing with it a little and didn't see anything.