“In the increasingly complex world of online social networking, keeping track of multiple accounts across many networks is a difficult task. A new Web browser, Flock, attempts to unify access to many social networks, including Facebook, Flickr, Twitter, YouTube, Photobucket, Picasa, Livejournal, and Blogger,” Tim Barribeau reports for Technology Review.

“Flock was launched in November 2007 and is growing fast. CEO Shawn Hardin projects that, with more than one million downloads to date, Flock will have tens of millions of users by 2009,” Barribeau reports.

“Flock’s revenue comes primarily from Yahoo, in exchange for making the search engine the browser default. This is a similar model to one used by Firefox, which had a revenue of $66.9 million in 2006, of which 90 percent was from search-engine royalties,” Barribeau reports.

“Flock functions like a standard browser most of the time, with a few added functions that gear it toward social networking… A central theme running through all the utilities in Flock is the ability to share information with friends,” Barribeau reports.

Full review here.

More Flock info and download link here.