Originally Posted by SmutGiant

As long as the site delivers content wise, i don't think a long domain name will affect conversions much.

As an affiliate (provided the content peaks the surfer's interest enough), it actually may be better for the paysite to have a longer domain, increasing the chance of getting a bookmark with your embedded ref code as opposed to the surfer remembering porn.com or whatever and coming back to sign up after the cookie's expired.