So this is only partly related to s2member in that I am still using the s2 modified default wordpress registration form but I added the re-captcha plugin to protect it.
I am also preparing to use the s2 pro free registration form from so it is on my site but not yet part of the menu structure. It too has re-captcha protection.
The point is, because both forms are physically available I am not sure which form is being violated (perhaps both) but when I manually try and create a new user with either form I absolutely must correctly fill in the re-captcha yet I am getting several crazy registrations per week.
My inability to register without correctly doing the re-captcha combined with the complete gibberish and the quantity of text in the registration makes it seem highly unlikely that a human is actually doing the registration so I have to presume that it is a robot or I suppose it could be a robot with human assistance.
Thoughts?
DP