http://www.adweek.com/news/advertising-branding/budweisers-first-tweet-asks-fans-name-baby-clydesdale-star-its-super-bowl-
There doesn't seem to be any real "rules" for this, like the most mentions for a specific one gets the win, but maybe if an overwhelming amount of people suggest one it will win? Not sure.
But Budweiser's first tweet was what the name of the newest Clydesdale would be.. What are the chances it gets trolled by some online community?