I want to build a functionality on my website that allows you to +1 (add a vote) a post. I want to integrate this functionality with facebook, so that 1 single vote is allowed per facebook user (without creating an account for that user on my site -- if it is possible).
Please point me in the right direction for this. I'm looking for any solution that is a Drupal Best Practice, or any idea that you have on the subject and how it can be achieved.
Right now I think I will go with Fivestar module, but I'm not sure how to integrate this.