Facebook is needed to use RockMelt for three reasons:
1) It means you don't have to remember another username and password
2) It will personalize RockMelt by adding in the features you like from on facebook.com, including getting your news feed updates, sharing and commenting on links, and updating your status.
3) It will let you take advantage of RockMelt's backup feature, which automatically syncs your bookmarks, feeds, preferences, and more. This means that you'll always have access to your RockMelt bookmarks and updates everywhere you log in - whether it's your mobile phone, home computer, or work laptop.
RockMelt takes privacy very seriously and will never spam you or share your data with Facebook or anyone else. We'll also never post status updates without your permission.