I get notified every time someone joins the forum. I typically check the registration IP addresses and emails against a couple of spammer databases, and then ban the users if they show up on those databases more than a couple of times.
We get perhaps 3-5 registrations a day, so all that manual checking was getting tedious. I found a plugin for SMF called "
Stop Spammer" which automatically checks every registration for me, then shows me the suspect registrations. I can approve or reject all of them with 2 clicks; it's very handy.
I also get told how many spammers have been blocked. Since I installed that plugin 2 weeks ago, it's blocked 400 spam registrations as of today.
