Tell them to consider the rules of netiquette.
http://www.albion.com/netiquette/rule5.html
I'm fine when someone on here asks a question, but if they are too ignorant to use proper grammar/spelling/sentence structure then I'll find a way to get my opinion across.
Funny part is most of the kids that come in without regard to netiquette are from the U.S., while some of the "most foreign" members of this board have better sentence structure and spelling.