The web server may keep track of unique ip addresses. If it sees a post from an ip that already has visited, it wont let u vote. As far as u voting 2x, u would have to see if maybe its timer resets (like after an hour or day, etc) to allow another vote from same ip. You can also try deleting your cookies if thats what the server is tracing or vote from different isp's; such as work, home, maybe your wireless provider, etc. best thing to do is do what u did, ask others to vote. i just did.