Yeah Chris I can only imagine what the pile of deleted posts that normal users never see must look like! I’m just thinking that your job might be a bit easier if it wasn’t so easy for spammers to create new accounts in the first place - I could be wrong, but it feels like most of the spam accounts are bots.
Alternatively there’s the tried and tested method of forcing new accounts to introduce themselves in a dedicated thread before they can post on the rest of the site…