Well,... I just installed a demo version of xRumer and ran it, using my website as a test. The "demo" version of the program uses an email address of:
xrumeremailYOYYY@maildomainJJKUJ.com
Username: XRumerYGQYY
Obvioulsy, this is an invalid email address.
Guess what??? It got signed up.... no validation email, no "vaidation code"... and yet there he was, a new member at my site.