I actually got this idea from my hotmail account. Every day i get tons of junk mail and its all in Arabic. Not sure why im getting these now when i never got them before.  So i asked MSN if it was possible to block all emails with Arabic letters. I have not heard from them yet. 

But that gave me an idea, what about if i did a plugin that would block all Arabic letters from a Oxwall site.  I don't know if this is a current issue that people are having or not or if it would be worth it. 

Just a thought.