[UnknownMember]

It doesn't seem like it would be warranted, to me. To call attention to sarcasm is to completely eliminate the point and effect. It's kinda like a joke; if you have to explain it, it's no longer funny. If you have to *tell* someone when you are being sarcastic, there's no point anymore. While I agree that it is sometimes difficult to interpret the tone someone else is trying to convey in a forum, that doesn't mean we should just stop using sarcasm, or eliminate the point of it. But hey, just my two cents.