This irritates me a bit:

I look over them, but I don’t think I have to respond to all of them. I answer only when resolving the issue is surely important for the user and that can also help other users.

This dev attitude of "it's free so you're lucky if you get support" is really tiring to me.

Then again, I don't use it. Tried it once or twice - HATED it - nuked. I have a paid plugin that is much better for my needs and I'm not so cheap that I think everything should be free. :)