The Rockmelt "social browser" has been on quite a ride over the past few months. It transitioned from a desktop tool to an iPad app, giving Apple's tablet users a graceful way to browse, share and enjoy their favorite sites.
The mobile browsing experience described by Harry McCracken as "a little as if Safari and Flipboard had a baby together, and it came out looking like Pinterest" is expanding to the smaller screen. Today Rockmelt launches version 2.1 of its app,
