Polls open to guests has been a much requested addition to PHPFusion. I'm pleased to announce the release of the IP Polls Infusion. It works in very much the same way as the built in system, only it uses the users IP address to log their vote. Obviously this method is far from fool proof because IP's in Europe tend to be dynamic rather than static. I'm sure you'll find it useful, and further improvements can and probably will be made.
You can grab this Infusion from the downloads area [here].