Presently, the most active songwriting site that I have seen is one where people post a song once a week. There is real consideration by some publishers and industry people. No one that I have seen starts going into detail with anyone else regarding what they think is not-right with any songs. People offer a compliment here and there depending on their tastes and inclinations and that is it. I've noticed a couple of people who have real talent and used to post here. Every song that that those people put up is good.

There are no flame wars that I have seen. No arguments over politics or religion.
I dont spend a lot of time there, but all of the interaction is cordial that I have seen. And, as I said, it's active.