[bmah]

Unlike sports or other events, it's very difficult to catch cheaters on the internet due to the anonymous nature of the internet. You can do DNA and blood tests for baseball players, but there's no sure-fire way of finding a cheater in an online tournament of this particular nature.

@Findarian: typically, one would study the player's history on songs as well as see if any IP addresses match. That's probably how Kayla would go about determining sandbaggers. But no method is perfect as was emphasized already.