Both. I sometimes give feedback in the "feedback on finished songs" section of this forum, and the video series comes to mind, but of course it would also be nice if some people would check out the facebook site every now and then.
I've just started a new feature there, "Feedback Friday". Have a song you want feedback on? You could post it there and I'll get back to you! Would be great to see one of your songs in the comment section!
Anyways, take care and talk soon