I tried out Flock when it was in an unstable beta version a long time a go, and was pretty impressed with the functionality and all the media goodies. But it was in beta and couldn’t act as my primary browser, thus it became a dust collector in my dock.
Fast forward to Mac OS X [...]

With Google et al releasing their Open Social API Facebook should be really afraid, specially with their recent unfriendliness against application developers, (a-list) bloggers and subsequently their user. If there is anybody that know how to take good care of developers (API’s etc) and bloggers (pr) it is Google.
Oh, and MySpace has joined in with [...]