FourSquare has an API out. Never knew there already existed a WordPress Foursquare plugin. This FourSquare API is going to make things a whole lot more fun. As Drew points out, it was the API that helped grow Twitter and do all sorts of weird and weirder things (and business productive things!) and with all things Internetty now, the network you are connected to is/are more intelligent and creative than you.
Still referencing Drew, I like his suggestion about unlocking bonus/points discounts if you try something different on the menu. Game theory like I mentioned in the last FourSquare post. Perhaps too have secret menus for FourSquare. In and Out burger have a secret menu (though not so secret) and mixing rewards with special actions could be a good way of utlising the API.
I’d love to see maps of caffeine flow and see how far people travel for food and what places people travel most too. Lots of fun and also a stalker’s dream.