".. and think you should at least be nice to your friends and incourage them.or be courtious and say nothing.."

I disagree with that there. This is more than a community, it's a place to learn. If one doesn't want comments on how they could improve on something then they should either not post here or disable comments.
This site has beginners just starting out, vetrans who do this for a living and everyone in between.
It doesn't encourage someone to simple post an "Excellent!" and let them continue to make mistakes they could be working on.

...... Kendra