Very interesting sites here. So, there are these websites to meet up with old classmates… but the problem was in their marketing tactics. False advertising, demanding payment, false claims that someone is looking for you to get payment.
20180611/https://en.wikipedia.org/wiki/MyLife
20180611/https://en.wikipedia.org/wiki/Classmates.com
20180611/https://en.wikipedia.org/wiki/Names_Database