Facebook fanatics should check out RockMelt, a free Web browser that integrates Facebook in its features and interface. It's based on the same open-source browser kernel as Google Chrome, so it's fast and versatile. RockMelt displays your friends, services, and other Facebook features right inside its interface. It's incredibly easy to share stuff with friends, too. While RockMelt works perfectly well as an everyday browser, it's specially configured for Facebook users, and its integrated features may be less appealing to others.