How is this extension being used?

I'm trying hard to figure out how to integrate this extension in to my website but I am finding it challenging. Is anyone else using this extension that I can see how it has been integrated? Its been described as being similar to Foursquare but I don't know how you can set it up that way..I have 10,000 businesses in a database extension that it might be interesting to tie this too but no clue if that's possible..