When we sat down to figure out how to set up the voting, we were assuming that there would be 20 entries. We figured a 2 week period between votes would insure almost everyone would vote each round as we could send 2 reminder emails each time (one a week).
When the number jumped up to 35, we did not take into account the new total to adjust the voting rules. Because of the number of entries, we are changing the voting to once a week. More often than that and we think many people will not vote each round. This puts the length of the voting about the same as American Idol which seems reasonable.
The Number of Voters
If we have just 500 - 1,000 voters, then this really is who has the most friends registered and that would be a lousy way to have the contest decided. If we have 10,000 voters then we are looking at a real contest based on how good each film is. And at 100,000 we have a real contest. So our hope is between now and April 2 that we get 100,000 or more registered voters.
You can help. Please pass on the registration link and the contest news to anyone and everyone you know. Ask them to register and vote. Post it on web forums, post it in blogs, post it on Digg, post it at work/school. I hope every film student registers because part of supporting each other is participating in the selection of the best video in contests like this.
Vote Fraud
No system is perfect. Our goal is just to be better than Florida (which should not be hard). We are going to look intelligently at the domains with large numbers of emails. If it's ibm.com they are legit as the few people at IBM that can create additional email addresses would not risk their job over it. If it's stanford.edu we will take a fast look as there are again very few people that can add email addresses but if some are students, they might do it. If it's {LastNameHere}Family.com we're going to flush it.
And the IP address comes in useful here too. If the same IP address is used for multiple emails at multiple domains, someone is playing games. There are other things we might discover when we look at the totals. If we are unsure and the registries have valid phone numbers, we will call and ask.
We're not trying to stop someone who has 2 votes (say gmail.com and yahoo.com). We understand that a small company can have 5 - 10 people voting and they will all have 1 IP address from their firewall. Or 5 - 10 students in an apartment sharing a connection.
Our fundamental assumption is that we will get 10,000 or more voters and that the double voting will then be a very small percentage of the total and will not decide the winners.