@simon
When I was in my 18-early 20's, I was a bit more chaos fuelled.

I worked out that a certain type of person, with a very specific tattoo, liked one of a few sentences about their tattoo.

I didn't know them. I didn't need to have listened to them. This tattoo, meant I could use a few lines.

All the "ads are listening" folks are saying is "How are the ads being targetted at me?".