Sorry, it was the best Haiku I could come up with on short notice.

In answer to the question, though, I believe having a multi-vote casting system would not be all that good. What if someone is out on a vendetta (sp)? While I am not an XP whore yet (looks like I'm headed that way), if someone were to throw all of their votes to kill someones write-ups, it wouldn't make it a very fun place, nor friendly for that matter. The XP doesn't matter all that much, but it does sort of add a little excitement. A multi-cast would throw too much caos, and those without the fortitude to withstand something like that, might not want to come back into the sandbox to play. Think of all the insights and general knowledge that would be lost because someone didn't think that it was worth it to come back. Not that XP makes it worth it, but it is a part of the overall experience.

Bottom line: If it is a well hated or well loved write-up, enough people will vote on it and the author will get the idea, real fast. Leave the voting the way it is -- it works!