I've programming in a comment system for levels in the portal by allow you to link them to the forums. If you want to enable comments on your level, view it while logged in and press "enable comments".
Also, user profiles pages have been created. This makes it easier to view a all of the levels submitted by a user. Points and a ranking system have also been added. Currently, you get 10 points for posting a level. But, you may get points through other means like winning contests or getting a staff featured level. Something... special might happen when you reach a high enough rank.