Seems you guys have a major spam issue. Most days I come here there's spam posts. Today was just insane with a large number of spam threads. It's pretty easy these days to install spam filters that prevent spammers creating accounts. I run a large forum that gets more posts that this one. I get zero spam. If you can't install filters / spam prevention measures then you should change to forum software that does cater for this. I use Invision Power Board. With that there are a range of anti spam measures that can be implemented.