[slinkyavenger]

I remember reading about this a few years ago, and observed network activity using Facebook. They certainly did capture what you type but fail to post. I would put serious money on them mining that data, too, since it can reveal someone's true uncensored thoughts.

[kfrzcode]

I'm going to take a weekend and build a javascript capturing tool that does just this, so I can open the source up and get a viral post on HN, that should spark some discussion