Forum Moderators: open
I see this mainly in 'program' forum spammers that systematically register bogus forum memberships for the sake of a backlink in their profile, and using other information fields like "location" or "interests" to keyword-spam to go along with their link.
(At the forum I work at, these don't appear, and are unsearchable, but this doesn't deter the addition of these spam memberships; sometimes at the rate of hundreds per day.)
Just out of curiosity, I've made a rough canvas of the Providers that these people use, and "Protecting the rights of our users..." generally figures prominently in their 'service description'.