Flock is the first major browser geared toward social-networking addicts. Built on Firefox code and available for both Windows and Mac users, it will do absolutely nothing for you if you're looking to get away from MySpace, Facebook, Twitter, Flickr, blogging, and other Web 2.0 mainstays. If, on the other hand, this is one addiction you're looking to feed with a shovel, Flock has everything you need to stay one step ahead of the bleeding edge.
Nine buttons at the top of the collapsible sidebar make accessing any of your social-networking or frequently used Web sites easier than Twittering your breakfast. Each button either helps you get your message out faster, such as dragging and dropping photos into Flickr, or helps you read blogs quicker, as with the integrated RSS reader. The People button turns the sidebar into a nifty way to track your social-networking accounts, and there are also hotlinks to most major blogging sites including configuration options for self-published blogs. Most regular Firefox extensions work, too. Even though it's resource-heavy, Flock is the only way to go if Twittering, Facebooking, or YouTubing is how you spend most of your time online.