Upload page needs some minor updates. The link for post relationships mentions doujinshi and manga pages which aren't allowed here. Also, no need for the "related circles" link.

As far as the comment limit goes, perhaps a secondary limit per image. 3 comments per image with 3 images an hour.

korokun said:
I invite you all to come and talk in the IRC channel.
I remember seeing a link for it on the site but it's been gone for awhile.