I'd love to know more about that specific event - people getting ads for thing that they were just talking about. I hear people saying the same thing quite a bit.

I'm inclined to think that they perhaps ARE listening to you, specifically targeting terms that could be served up in an ad, and then actually serving up the ad.

But are they also just searching online for these potential ad targets, and then of course they're going to be served up the ad?

Anyone have some evidence, for or against this?