Ozymandias:
This is exactly what I had in mind. I think that probably the best way to handle allowing deletion of nodes would be check the following conditions:

• Node is less than X minutes old (5? 10?)
• There have been no replies to the node
• Node maintainer supplies reason for deletion of node

Upon meeting these conditions, a node maintainer could "mark" the node as "Please Delete" which would "hide" it from readers. Then the reason for deletion of the node could go to vroom or another administrative-monk for approval of deletion. Perhaps the admins could have a queue of "please delete" nodes. Hmm?