• RockMelt is a new web browser that is built with social sharing and integration in mind. It features a "Shelf" on the left side of the browser that allows users to quickly access their social networks, share content, and stay connected with friends and followers. The browser is designed to make it easier to discover and share content across the web.

• The RockMelt browser is built on the Chromium open-source project, which is the same foundation as Google Chrome. This allows RockMelt to leverage the speed and security of Chrome while adding its own social features and functionality. The browser also includes a "Feeds" section that aggregates updates from the user's social networks, making it easier to stay on top of the latest news and content.

• RockMelt is currently in a closed beta phase, but the article provides 500 exclusive invites for readers to try out the new browser. The invites are limited, so interested users are encouraged to claim one quickly. The article also notes that RockMelt is positioning itself as a "browser built for sharing first," which could appeal to users who want a more social and integrated web browsing experience.