It probably doesn't, the auto complete filters out rude stuff now so it probably hides all that cos there's no dirtyness online
(TheobanWhat of it, Thu 7 Jul 2011, 16:44,
archived)
the websites you visit have to be affiliated with the scheme,
so maybe they don't even let those sites sign up.
(Moon Girl Technologieshorrendous beanbag, Thu 7 Jul 2011, 16:45,
archived)