RockMelt Social Browser

Erick Schonfeld, on the browser that shares:

RockMelt is built first and foremost for sharing. You browse with your friends (the first thing you do is log into Facebook and your favorite friends and their latest status updates are always available along the left rail). And there is a big "Share" button up top, which lets you share any webpage, along with images and a preview, on Facebook.

Built on Chrome around "friends, feeds, and search". So tell me why do I need yet another browser to surf Facebook and share links?