Antisocial: Social widget blocking Chrome extension (chrome.google.com)

How long before this is a common feature in all browsers? Can't happen soon enough for me.

Also I would like something that would actually partition my browser session on a per-tab or per-window basis - perhaps with rules for particular sites, or even patterns of data exchange.

I should at least be able to control/limit merging my news-browsing context with my messaging context in the browser itself.