Facebook for Android makes it easy to stay connected and share with friends. You can share status updates from your home screen, chat with your friends, check out your News Feed, review your upcoming Events, look at your friends' walls and user info, upload photos, share links, check your Inbox, and view posted videos.
The latest update brings two major changes: Chat - now you can chat with your Facebook friends right from your Android device, and
push notifications. Unfortunately, the push notifications only work on devices running Froyo or newer, and for everyone else there is still a painful lack of notifications for comments, likes, and wall posts.