UBB.threads PHP Forum Software Community Forums General Suggestions and Feedback Spam Activity and other critters

I used to get tons of spam but have made a few changes. New members on my forum need to have 30 posts before they can use html or UBB Code or signatures so they can't link. As well, they have to wait between 5 and 15 minutes between posts (depends on the forum).

I get very few spammers now and it doesn't seem to discourage legit members.