Thank you to everyone who replied to our poll about comment disabling. We've decided that we're going to keep comments open on both posts -- the fic/art post on InsaneJournal and the link post on LiveJournal -- for convenience and to encourage everyone to leave feedback.
One thing that might be helpful to artists and writers is comment tracking, which means that you get notified every time someone replies to a post. Once your submission is posted, you can track comments to that post so that you don't have to keep checking the post for your feedback. To track comments, click on the thumbtack icon at the top of the post then click "save". You can do it on InsaneJournal and LiveJournal, but you have to have an account or it won't work.