One of the few places where comments actually carry extreme value. I try to take the time to carefully create my comment (even though some are probably too long), but I feel it is respectful to show:
1.) That you took the time to read the article
2.) To say what you liked or disagreed with
3.) To help that user with ideas that may benefit them regardless of whether or not it has a direct effect on your wallet
And fringe benefits to valuable comments:
1.) Earn respect
2.) Earn money
3.) Gain followers who appreciate your time and effort helping them
I think this is one of the very few sites that I am unafraid to share my beliefs out of fear someone will post hateful/derogatory comments to me. Those that do have their voices silenced and don't wind up hurting me so much as themselves.