I agree with BitcoinPorn that the main purpose of Bitcoin100 is to promote Bitcoin by giving charities incentive to accept it, not to simply donate to charities. Archive.org put up a Bitcoin donation address, and received numerous donations in return. I believe that our Bitcoin100 funds are limited (note how many were only able to pledge 1), and should not be spent casually, and that donating them to archive.org will not serve their intended purpose. As far as i know, these funds have not been promised to anyone yet, and I suspect archive.org's acceptance of Bitcoin will not be influenced by any decision Bitcoin100 makes.
That said, I will abstain from any actual voting, and will send the funds wherever I am asked to.