@moshpirit  first paragraph explains how they store visitor's IPs by md5 hashing them. Purpose of that is to match already given votes. Despite their use of Google Analytics it looks okay to me but for that they use some feature "anonymizeIp" which anonymizes your IP at your browser before handing it over to GA. (I'm not sure how and if that works.)

Furthermore if you set up a poll your IP is stored to avoid misuse. @mcscx