http://news.cnet.com/8301-17852_3-20111 ... ?tag=mncol
M Zuckz tracks what pages you're going on even AFTER you log out of facebook. It's alright though.. he replied to this with "Trust Us".
Yeah.. Trust Me, I'm a Salesman?
To add to this.. G+ traffic rockets to 1200% yes. 1200%.
This really isn't much of a surprise though. Facebook isn't the only site that uses cookies for post-tracking information.