Well, apparently your levels are mediocre.
If your levels suck, people will gather in hoards to smear into your face just how bad they are.
If your levels are awesome, a bunch of people will tell you how much you rock.
If they are mediocre, I guess you'll have to figure out how to become good yourself, because nobody likes mediocre levels.

...that sounds really stupid, but I have the feeling it's true.