[@reverendspam Member 12 years, 5 months ago]

In the past 6 months I was getting 50+ spam bot registrations a day. I used WangGuard, but it was not catching them.

The bots were looking for the default registration page at http://yoursite.com/register

I changed the permalink of my default registration page to something else and have not had any issue since then.

Knock on wood, I have not had to delete any bogus registrations for the past month.

I hope this helps.