Snaking. Best thing since sliced bread. Ever.
People find ways to complain about everything, they even thought snaking was a glitch in Mario Kart DS and it was unsportsman like to pull off such a cheap trick. I tell you, I'd never race without snaking, it looks like it is going to be reintroduced, and I can't blame Nintendo, it's added so many more elements to the game.
You may call it cheap but obviously, if we were racing normally the fastest kart would have won; boooriiing. With snaking it can all change if you miss out a turbo, plus, it seperates the good players from the recent newb players.
I have seen glitches though, that killed my spirit for me and the game, I don't know how they'd exploit the system. Also, Action Replay can go straight to hell.
I don't think the blue shells should have been avoidable though...