Would be good but many people have already adapted to MSN and Skype here. Having an XAT would be just drop dread. Also many advertisers, spammers, and idiotic fools who think its funny to spam like a ridiculous 12 year old.
Imagine you're just walking along, and you find a bag full of money. Not a LOT of money, but around $100. You're like, "Sweet, I can buy shit with this." Then when you open it, you find it to be a bag full of moldy dog shit, puke, and everything that can come out of a man's penis.