That is a good solution for the 3.8 and earlier boards if you are having issues installing this version on your 3.x series boards. There are a lot less functions than Spam-O-Matic but it does a good job of preventing spam signups and is what Spam-O-Matic was based on.
If any of you are going to be running vB4 make sure to check out this thread:
https://vborg.vbsupport.ru/showthrea...t=Spam-O-Matic
It is a better solution for the 4.x series boards, and lots of additional features.