O hey, let's get back on-topic?
I've still seen people post senseless comments on maps (and warned them for it, telling I'd -rep them next time I saw them doing such a thing).
I can say that the amount of grab-your-pitchforks-and-torches-kind of rages against certain low-quality maps have decreased, but the "Bad terrain, bad object data, rejected" hasn't.
And yes: I am NOT perfect whatsoever.
I'm glad Debode quoted what I said before, but honestly: I find that more a human thing - I usually try to avoid such comments, but when you're in a really bad mood you sometimes just can't help yourself.
I can't justify myself in that case, but such things don't happen often... I hope.
What I do often is reject 'without reason' though (when a user clearly breaks some ground rules).
More map mods:
Improbable. It takes too long (about 2 months?) for a single user to be chosen, approved and promoted to a moderator.
May seem like a lot? Well, it is... but we can't help that either: every time we browse through a player's record, we find negative things (and I find that a downside of the internet: not everything should be recorded and treated as that person's general behaviour).
And on top of that, there are only a few users in which I can see a potential map moderator.
New rules:
A main problem right now is that people don't read (or even don't know of) the rules.
New rules won't change the fact that people don't read them.
I only noticed this thread now (I never read this sub-forum), but I started acting against these things a while ago.
Now you can say "But app0000hhh, you do it yerself! D:".
Yes... I do, but different

As I said before, I reject maps ('without reason') because of clearly broken rules.
However, if one would ask why the map got rejected, I'd just tell them about the broken rule(s) (or anything else wrong with the map), so they can just ask for information at any time and I will provide them with it (not the best solution, but a lot faster... and the massive amount of maps requires me to work in a more efficient way).
(@ Grey: Yes... that's the entire point of internet according to some).