I may personally hate the idea of social media popularity being used to dictate the content of a menu, but I suspect there's a kernel of a great idea there. After all, this is essentially the big data or Netflix approach to deciding what content to make. Likes are just one metric that would be needed, but you can certainly get an idea of the kinds of things that make people drool.
Buzzfeed will likely first want to move into more cooking shows before opening a full restaurant to see if they can create some more fans, possibly even see if they can have their own homegrown celebrity chefs, then branch into restaurant/food space.