So guys looks like the human verification algorithm that many sites use was cracked again late last year (hence all the spam). See the article here if your interested in reading up on it.
Pretty good read, so what're we gonna do about the spammers? Keep banning and deleting their posts? I'm fine with doing that until it blows over.
Yes keep banning them and once a month I'm going to delete those members. I've also changed our human verification to question and answer based so I'm hoping that helps.