Zilla Likes also just uses Cookies to prevent double-votes. Users just have to delete cookies to vote again.
I now want to use a facebook/twitter login plugin
Users have to login with their facebook/twitter account to see the voting.
But does anyone know a detailed instruction on how to realize that every facebook/twitter account can vote only once? The HTML-Code that displays the Vote-Button could just disappear if this fb/tw account has already voted.
would be great. thank you guys.