Maybe there are people who want those on their mobile? Maybe they don't WANT to be told what is acceptable?
Why does it seem the more adamant someone is against something, the more they are involved in using it? Like my friends who worked for the porn industry in Australia, who said, "Yep, several of those politicians have accounts with us." And the big anti-gay speakers who end up being caught on vacation with a 'rent-a-boy'?
Makes you wonder.