That's exactly what I've been doing. Only I, as Admin, can activate new members to my site. I have my site set so that I get an e-mail every time someone registers. I then go in and look at their application. If there is anything the least bit suspicious, I permanently delete them. But, it would really be helpful if there was some way to obtain the IP's of these spammers so that I could put the offending IP's on my ban list. That might eliminate some of them much sooner.