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That puts a click between all the social hoo-hah tracking you across the world and letting you twit/g+/verb-here about videos. I think twitting about videos is super useful, but hate the tracking.
Anyhow, I'd like to look into using this for social hoo-hah stuff.
Schneier talks about using a different system: http://www.schneier.com/blog/archives/2013/03/changes_to_the.html