The best option, for any post, is to send the offender a PM, and politely ask them to remove or rewrite the portion of the post that you object to.
I'm of the mind that once it's out there, assume everyone has read it; then there's no point in having the information removed. Probably best to just change your plans and just treat the situation as misinformation.
I meant letters between characters, whether the letter is marked OOC or not. For example, if Player A sends a letter IG to his realm as a whole that appears offensive on an OOC level (due to prejudice), where / how should that be reported? It's impossible to remove it or change it once it has been sent.
Assume as well the attempt made to ask for an OOC apology failed. (I'm a big proponent of the idea that we should solve personal disputes individually before seeking the harsher actions.)
