Funny story. A guy on a wood working forum I am a member of was grousing about seeing ads for women's underwear. The stuff one sees on ads in forums is based (mostly) on what one has already looked at, elsewhere. It was a while back, so he probably was looking at that stuff at some point.
Backtrack a couple of days, after I had just cleared my cache. Wife sees scantily clad women on that wood working site, in my browser. I go elsewhere, and it shows some truly sexy wood
tool chests, which I
had been looking at.
There's no escaping advertisers, anymore.