Several years ago, we had a family get together and there were some extended family there that i see once every few years at best. Same day I get new friend suggestions on FB...the extended family members. I didnt "check in" or anything like that or even open FB and this was an automated friend suggestion. Then shortly after, my wife said she was just talking about a product with some coworkers and then ads started popping up in FB for that product "randomly". It was really creepy.