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people also dont use shadows because they post an image in the gallery and they get perfect rating. and when you read the comments its like he rendered a perfect realistic human.

which is strange. not using shadows because using poser is a hobby is one thing. but to writte that it looks realistic is another .

That's because half or more of the people who post comments are doing so to either repay a nice comment from someone else, posting a nice comment because the person is their friend, or hoping that by posting positive comments, he/she will receive positive comments in return.
Or a combination of all the above.

Too many times though I've seen people accused of gallery trolling for daring to speak their mind and calling it like it is, so people don't get alot of that "helpful criticism" they claim to want.