Hi Jerry, thanks for jumping in. This forum uses "karma system" to attempt moderate itself. User karma is generated by votes, the higher is karma the more functions (including moderation functions) users can access.
By default there was a 50 point threshold to comment anywhere (now lowered to 1 point). However anyone can comment own posts and answers to own questions. Now since this setting is lower it is not relevant.
Also the forum is kind of like a wiki - that users with high karma or admins can edit other's posts, owners can always edit their own posts. I'm in fact going to add "meta" tag to your question, since it's kind of a meta question - about the site itself, not about NMR or EPR.
answered Aug 19 '10 at 09:43