User blog comment:Leyrann/Placement Matches - The toxic that creates the Elo Hell feeling/@comment-60764-20121127171714

Sad thing is, Elo itself doesn't have to be a bad system, though it rather badly run/calculated at the moment (still better than World of Warcraft's by a few hundred miles, though).

And elo hell does indeed exist. It's when you're playing Ranked and people act worse than they do in normals.