Targeted Advertising

I was looking around ESPN.com this morning when I saw this ad...



What the heck? Did the computer decide to keep track of my New Year's Resolution and plant a weight sensor in my chair while I was asleep? How in the name of Pedro do "they" know who to show that ad to? I'm going to start scanning my game room for bugs. There's probably one in that Elmo that says "Elmo wants to play" whenever I step on it. I'm on to you Elmo.