I'm sorry you have seen criticisms in some of the posts on this board. All in all I think we do a good job in celebrating each others work.
Many of us try new techniques and ask for critiques from more experienced quilters. I have offered advice on PP and I hope my advice was interpreted as constructive and not hurtful. I think I speak for many when I say that I have learned a tremendous amount from many on this board and have offered what little "expertise" that I have.
If you personally have been criticised by anyone I am sorry that you have been hurt.
We are a great group of quilters and your post reminds all of us to be kind and helpful so our words are ones of encouragement. Please stick with us...everyone here has something to offer. :D