So what is RockMelt, exactly? In short, RockMelt is a modified version of Google's Chrome web browser, and is based on the Chromium toolkit from the same company. While the new browser certainly does a lot to differentiate itself from its origins, here we see a familiar home page. You can see some RockMelt additions already, which we'll get to later.
Here is a side-by-side comparison of RockMelt (left) and Chrome (right). If you take away the "edges" on the left and right sides of the RockMelt browser, the two browsers would be nearly identical.
The three most prominent features of the RockMelt browser are the "edges" on the left and right. The left edge handles your Facebook friends list (Facebook is heavily integrated into RockMelt) and the right edges takes care of RSS/Atom feeds. There is a also a "share" button in between the url bar and the search bar.
The RSS edge can hold the RSS feeds of all your favorite websites. Simply click on one of the icons (in this case, Slashdot) and the feed pops up on the right side of the browser window. The feed can be moved around within the window, too.
When adding new RSS feeds to your edge, you can either search for feeds by URL or add feeds from recently visited websites.
As previously stated, Facebook is a big part of RockMelt. The left edge shows all of your Facebook friends that are online, and by clicking on their photos, you can start Facebook Chat windows. A Facebook page does not need to be opened; everything is run through the browser (when you install RockMelt, it asks for your permission so it can access your Facebook data).
See a cool video or webpage that you want to share? Instead of navigating to Facebook or Twitter, just click the share button, add a quip about the link, then share through Facebook, Twitter, or any number of other services.
Sharing on Facebook through RockMelt is noted under whatever is shared. Instead of saying via iPhone or TweetDeck, it labels the post as "via RockMelt."