> Same goes for facebook - as long as you're logged in... Even if you're not logged in, AIUI they're still logging the IP's that load those like buttons, and a

> Same goes for facebook - as long as you're logged in... Even if you're not logged in, AIUI they're still logging the IP's that load those like buttons, and anything else they can glean to match to "shadow profiles", which presumably they try to match with known profiles via cookies etc. if/when you log in later.