When you first launch the RockMelt browser, it asks for your Facebook login information. Once it starts, it automatically logs into Facebook and integrates Facebook information directly into the browser interface. This includes a list of Facebook friends (show with small image thumbnails) that runs down the left hand side of the browser window.
This listing could be customized to show favorites, which are selected simply by hitting a star next to the person's image. Clicking on a friend's thumbnail displayed their most recent status and provides the option to chat with that person or post on their wall.