If you take a look at your Xbox Live friends list on Xbox .com, you’ll notice that we updated it to include the Gamerscore of your friends. This should help you prioritze who you’ll taunt as a result of their low (or high) gamerscore.
By the way, the un-official term we have around the office for people that play games JUST to drive up their Gamerscore is ‘Gamerscore whore.’
Edit: Apologies if my post above offended anyone, that was not my intention. I was making a play on words…that is all. Carry on.