Look What's Cooking in Mozilla's Lab
"It's experimenting with ways to incorporate popular features, like social networking applications, into the Firefox browser"
On all my computers, I make sure Firefox is installed. It has been the browser of my choice, and am very satisfied with Firefox in general. Despite that, Internet Explorer has come out with version 7, and it is also very impressive. Tabs were added, which was a very good decision. (A little thing I noticed was that they moved the refresh and the stop button next to the address bar. Even though I should be used to this by now, I still occasionally click in the old spot.)
Business Week has written about Firefox's experimentation with social networking, "monetizing" social networks, and how, in the end, the users should decide what goes in the next Firefox.