Thanks, it appears to have worked.
I think a single functionality website that does this might be a good idea. Just have one field to import a private key, and another address field to pass all of the bitcoins to.
I guess Blockchain.info must only sweep when you login since the keys are all encrypted.
Obviously any site handling bitcoins could steal. Instawallet, Blockchain, Mt Gox are no different. But people trust them because they have been around. The site I proposed would be even better because that nobody would be holding money on that site, so at most they can only steal whatever funds go through in the time it takes people to realize they are stealing.
Although now that I read this... https://bitcointalksearch.org/topic/access-blockchaininfo-wallet-without-password-two-factor-or-e-mail-78081