Apparently a few weeks back this happened. About a month or so I remember a mod was busted on bodybuilding sub that was posting his personal info and then started telling people he was selling. He was also a source on there.
Reddit Admins made a post about cracking down on illegal activity around the same time as the mod was busted.
Someone mentioned about a few sources were busted from there but I havent heard any more from them about who it could have been. If anyone knows, feel free to add to it.