As I've mentioned before, I post on a Christian forum with an extensive TOS and active mods hunting for stuff they don't like. My latest run-in with the mods was in a thread about whether Allah and Yahweh are the same. Although they never really explicitly explain why they delete a post, apparently my post that linked to this Wikipedia page broke rule 15. So I guess it either promotes teachings contrary to those of Christianity, or promotes false religions. I dunno.
Anyway, no problem with saying, "I would submit to you that "Allah" of Islam is in fact the demon of Antichrist."
ETA: Wow, they just nuked the whole thread. (Or possibly it's temporarily in a 'review & hold' limbo)