FriendFeed has revealed another way to keep tab on your friends, off the site. With the new Adobe Air-based desktop application updates whenever your friends post something on FriendFeed on your desktop.
The difference is invisibility this time, that is until there is something to see. Unlike many ways that you keep a watch on your friends like IM notifications, RSS feeds, e-mail digests, or the Facebook app, where you have to flip between what you are doing and the method, Bubbles are the way with Friendfeed desktop app.
You can even comment directly from the bubble that pops up to inform you of update.
You will need Adobe - Air to run the application but it is easy two clicks to install.