There is something interesting that I find on art forums - many artists expect to post a painting or WIP and get feedback, yet they rarely offer or acknowledge their fellow artist. Is it because the artist is busy? doesn't want to participate? doesn't care about anyone else? Insecure about offering advice - even a "Like" click seems to be rare amongst many artists asking for attention/feedback/comments. I think it is important on a visceral level to examine - how much do you participate as an artist?
In the past 3 years of being involved in forums, I would say about 30% of artists acknowledge others and the rest seem to think that they don't need to give back.
I wish there was a rule that if you post a painting here and you want help, you should acknowledge the existence of at least 5 other artists - whether that be a "like" click or simple comment or critique.