Photo Contest - online voting tools?

<p>Hi guys,<br>

not sure if this is the appropriate forum for my question - please advise. <br>

I am webmaster for my local camera <a href="https://sites.google.com/site/gaithersburgcameraclub/Home">club's website</a> and am exploring whether and how we can hold <strong>online photo contests</strong>. <br>

The idea being that photos are submitted by members and can be voted up / down in their respective category <strong>by members only</strong>. This means, I need a "secure" registration process that disallows double voting (not that any of my club members would do this, of course). <br>

We are currently running in google.sites with our gallery in Picasa. If the contest requires a different platform or service, more than happy to use that.<br>

It sounds like something a lot of you would have experience with and hence I hope for advice and feedback here.<br>

Thanks!<br>

Dietrich</p>

<p>You can host a contest at http://www.photoscramble.com/ to do exactly as you indicted your needs are. (This means, I need a "secure" registration process that disallows double voting (not that any of my club members would do this, of course)<br>

Voting options include a single vote per member or multiple votes based on daily, hourly, and unlimited. If multiple votes is chosen there is a slick timer indicating the next time a vote can take place.</p>