[amazon_not]

You are welcome. Just do it in a secure way and don't store any information. Make submitting and voting completely anonymous. Don't require logins and don't log anything to protect your users. Use plain HTML and don't use JavaScript.

Even if the above makes the voting easy to rig, it's more important to ensure anonymity than perfectly accurate voting results. And even with biased voting data you can figure out what the users are interested in. If nothing else it will help you cull content, as lack of interest is also a good indicator.