I dunno why you're getting down-voted?
Cheers,
Not happening, its an unenforcable rule, punishing people for posting without a preview = less content and less users willing to post content.
Would need an addon, we've tried to find other spam filter addons but none fit what we want. We already abuse the spam filter for things it is not meant for, its just meant to catch spam links. Also wouldn't work most the time because most hosts dont have the filename or any identifiable information in the URL so anyone that uses a different host would bypass it, it could only work for identical links but it doesnt exist.
Completely understand and appreciate all of that.
They're a bit more lenient with posts in Requests - so check your porn stash, then do a search in the request section for anyone asking for stuff you might have.