Well.... there are a few things that you should understand...
Most NG users are young like 13, so they are obviously not going to be nice or constructive to you, you just have to be thick skinned and get over it. An easy way to do this is show your friends your flashes if you want to be praised for your hardwork.
No matter how good or bad you are, NG will always compare you to people like Egoraptor or DanPaladin in terms of movie quality. Most animators on this site aren't nearly as talented or experienced as them so most people don't care about the little guys like us.
Only video game characters are popular. Like I said earlier, NG is made up of young teens, and young teens love video games. So by making videos about characters they like, you automatically are praised. This is because most people on NG try to make a good plot and storyline but really nobody develops emotions toward a character in a 2 minute flash video.
Anyways, it's a sad world kiddo but these are my thoughts on NG.
Chdonga
Why is it that whenever someone says something you doon't want to hear, they must be angry, hateful, ignorant and unappreciative trolls? They most of the time speak the truth about the flash. Even though it may come out as (this is only an example, I'm in no way calling you out on your stuff) "It's crap. You seem to shade random areas on the person for no reason. There are so many glitches in this flash that I bet $20 that you never even tested to see if it worked." They actually are pointing out the problems even though they aren't offering ways to better your stuff. There are lots of people here who like mature stories, it's just these same people also like the stories to have good animation to go with it.
TL;DR: No.
TheEntertainer
I'm not saying that these people are trolls, and I do recognize the difference between constructive criticism and unnecessary rudeness. What you've pointed out is very true, but if someone doesn't like something as insignificant as misuse of shading, they don't need to rate it 4/10. Someone once gave me a zero on one of my cartoons because they didn't like the ending. =(