[TheLastSuperman]

Profile fields using regular expression work fine as well, I introduced 4 new profile fields with images required at registration, they must enter in the letter in RED from each image, the last image an entire word in RED. Since I have introduced this in August of 2010, not one single spam registration. I moderate members on my site but point being, not one fake/spam/bot registration attempt. I do see them 24/7 in the users online with a error displayed while on the registration page.

So you can beat them yes, you can't beat humans who take the time to register then put it on auto-pilot or a human regardless unless you ban their IP then they can use a proxy it truly is a circle of life per say in regards to spam no matter what software you use. You can even have something in place like I do currently but imo at some point I will see one come through human or not.