Hi Dick, Thank you for the note...I did that about 3 years ago. I currently manually approve/deny every registration.
Most of the time the SPAM is fairly easy to pick out. On the fence registrations will prompt me to search the web for the email address to see where the person/bot has been. If that is inconclusive then I do the IP trace....
Unfortunately these scum spammers are inventive and often use proxy seervers so the IP trace may or may not help.
I am always at a loss as to what these idiots hope to achieve....do they really think we all want knock off sunglasses and counterfeit sneakers?