I’ve had a few requests for help with combating registration spam using the plugin. To be honest, I’m right there with you all – I was getting a great deal of registration spam here on the site. I’ve been working on how to reduce that with a number of approaches.
One approach is the registration blacklist add-on. But blocking IP addresses needs to be done with caution. Many spammers are not spamming from their own machines. Some of it comes from innocent victims with compromised systems.
Another possible solution that can work well is to use what is known as a “honey pot.” This is essentially a trap that the spam bot puts its hand into and is trapped. That is the method I will describe here.