We do have a confirmation email; I don't remember if there's a captcha or not. But they still get through. There have been fewer and fewer over the last few months; we keep them pretty well eliminated through the hard work of my mods

And of course if we miss some, members reporting spam helps a great deal.
Now if only we could get regular members to stop posting links and stop deliberately going around the profanity blocker, we'd really be in business

Of course, some of those blocked words are downright "stup!d," but others are blocked for a reason.