Does constructive critic really works?

[EduardoGaray]

i believe that constructive critic is always helpful, it all depends on how you take it.
When you critic, you have to be honest, if someone's work sucks, you have to be honest and say it. (as politely as you can, of course)
Just giving people undeserved pats on the back wont make them any good.
With that said, i believe the best form of critique is a method used commonly by teachers.
Say two bad things, then end the critique with something positive, that way you are saying the truth, and are still positive.

In my own experience, when i started to post things on the net looking for critique, my first stop was conceptart.org. And everytime i posted something, no matter how "proud" or something like that i was, my work was always brutalized in the wip section. The critiques were harsh, but always helpful. That humbled me and made me realize how really big the world is, and how much i will have to work to really get better. :)