I think it could be dangerous to the letsrun that we all know. Over the past 5 years or so Letsrun has changed the running world. It's a place were people can come and say whatever they want and be heard. Everyone comes here, everyone. wheather they admit it or not. We are in a day and age now where everyone knows a great deal about almost everyone in the running communtiy. This is in very large part due to the message board, and in some part due to being able to post under whatever name you wish. If people knew who was posting the info, I don't think a lot of it would get out. Sure, there are rumors spread that aren't true about people being hurt, on drugs, moving, transfering, or whatever but it has been my observation that most of the rumors on here turn out to have some truth to them. The obviously fake ones are getting deleted anyway.
Letsrun and the message board has really become the center of the running world over the past few years. It really is the defining thread of the modern running generation. Eventually something will change and letsrun will fade away, just like all great things do at some point. I just don't see why you would want to risk changing something that has been working so well and had such a great impact.
I know it would make it easier to ban people who abuse the board, but I don't think its a huge problem right now. I just don't want this site to become runnersworld.