Website to FaceBook Ad in under an hour

Got surprised today.  I was looking at a tent on w00t.com today.  I wanted to see if it was a good deal, if there were reviews, etc on it.  One of the links was on OverStock.com.  Less than an hour later, I'm looking at facebook and I get the following:

So in less than an hour, the browser cookie from OverStock.com has been correlated to me in Facebook. In theory, now OverStock, who had no idea who I am other than a web user, now knows as much about me as facebook can sell them.

I guess the linking doesn't surprise me that much, it's just the speed in which it was done.  It was faaaast.  All my banner ads are now for tents as well.  The future is now... and it's CREEEEEEPY.