Probably levels from starlight , some of them are bit detail crazy.
It seems like you guys are getting the best of super meat world (funny, because all of these chapters were created before the official level editor was released, including cramps and remnants)
It almost makes the steam version obsolete, best of the best and leaderboards = win?
Exactly my thoughts.
I'm actually considering moving to my 360 version just because of Teh Internets and less hacked times. 73L and yourself being ranking in the 400's is a sacrilege.
Unfortunately, the hacked times are hardly better on the 360. I was in the top 300 back in July when my xbox broke. Now I am at 538. Damn those guys with 313 levels beaten!