Apparently the profanity filter doesn't just filter the bad words, but also links (or atleast chat links)
I posted that link as a reaction to something: http://s3.amazonaws.com/kym-a**ets/entries/icons/original/000/004/077/Raisins_Face.jpg
Word "a**ets" contains bad word a** and turns it into a** and it would be okay in normal cases, as no profanity filter is perfect.
So, Airforce had it enabled and got error instead of a picture
Apparently, a**ets were turned into a**ets in link. xD

It's strange that they even affect links; I'll see what I can do