Yesterday, a new social browser, RockMelt , launched in a very private beta. You can read my initial review here . But unless you were one of the 500 lucky readers to grab an invite yesterday, or know somebody who did (every user gets three invites), you might have to wait a while before you get to try it out. In the meantime, you can get a sense of what the browser looks like from this video I shot last week. RockMelt co-founders Tim Howes and Eric Vishria gave me a demo. The demo covers the main ways RockMelt is different than other browsers. The way I think about it is, you can browse with your friends on the left, your favorite sites on the right, and search up top. It is a realtime browser in that you can see when your Facebook friends are online and get notifications when your favorite sites, blogs, and streams are updated with new information.