Hm. That is true. Maybe I shouldn't of said that. xD; You're right; it could be more than that, even though it is more than likely that people are just being dumb/ridiculous. My boyfriend once got a traded pokemon from there and we argued about it being a hack or not (though I knew deep down it was; I knew he didn't trade anything special, and the pokemon he got was a shiny Munchlax at level 100 <__<). Though couldn't receiving a hacked pokemon potentially mess with your game as well?
Though if it's ev trained it would have to be at level 100, and I'm sure there are a lot of Pokemon offered for trade only at level 1. As for the shiny thing, I can't see why anyone would want to trade an uber for one, other than the fact that they look cool.