> Craigslist, from my casual observation (as someone who met my SO on there 9 years ago) had a lot of really obvious ads for sexworkers. They openly tolerated it for a while as long as it was in its own forum.

Its own forum was shut down under legal pressure some time ago, and it moved to other personals forums, as I understand.

Which is probably why they are now, with the new legal pressure, killing the personals forums.