One additional thought... what about removing the authors names and even randomizing the list of entries now that the contest is closed? This has two effects:
1. People aren't swayed by who created the logo (as much). People certainly wouldn't be swayed by seeing votes come in for a certain person's logo. All you'd see are votes for entry numbers. 2. People are forced to look at every logo again. Since the rules of submission were that you were supposed to submit and then update the same preview URL with any updates, there may have been updates to various logos. Lazy voters might look at a submission entry in the list and already know how they are going to vote, but the logo might have been changed since they originally looked at it. If we anonymize and randomize the entries then we force people to look at each one during the voting process. It will take longer, since voters can't just skip over ones they know they don't like, but given the fact that logos can change since they were submitted I think that might be more a pro than a con.
