Hear! Hear! I think this is an excellent idea. I've chosen to post more than once in Mediations rather than SoPW or PMD because I knew I could amend the root node. The YAPC::Europe monk list was one such example.

I think there are sufficient eyeballs to catch any jiggery-pokery and there's also thepen's archive (sort of like why one should always have a syslog server to capture the logs from the rest of your servers -- it makes it much harder to cover your tracks).