I suggest we get the ability to close our own threads. Reasons because we don't have to bother staffs to help delete it. We can delete our thread if we find it useless or we no longer need it and its old news. This can be a great ability that can help benefit all, but the ability should only be limited to your own threads.
Umm... no, no and more no's. These suggestions will create nothing but problems, such as people editing their threads after an attachment has been approved... going back and editing all their previous posts... etc.