I'm trying to make some kind of contest site, in which users can publish random old stuff, which will be raffled later between the users that have marked that content. I crated a specific content type for this, let's call it "kiwi", with a winner field. Then created a flag for that content, so, every content created has the button saying "I want this", when you click, you are kind of "subscribed" to that content. I want to create a rule, which chooses a random user from the list of user that have flagged the content.
I've been struggling with this for a lot of time, I don't have any more ideas on how to solve this.
Thank you very much