Any relative or absolute numbers you'd like to share?
> The reason is that vendors have (finally!) discovered that effectively nobody ever buys anything by clicking on a web ad.
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.