> My favourite experience with this was when I was selling a computer case and researched its specs on newegg.com. Then for a while all I saw were retargeted ads from newegg trying to sell me that case. Nonono, I didn't have one too few computer cases, I had one too many. I was the complete opposite of their target audience, heh.

Yeah, I've had similar experiences. Back when I used to play Eve Online, I'd see banner ads everywhere for the game. Big screaming banner ads imploring me to subscribe now.

At the time I already had two accounts. By definition I was the kind of person who could not be advertised to, but the ad network was still putting effort into targeting me with those ads.