I like the simplicity and it shows how HTML5 is developing. Well done Roddy! - Rich
The virtual representation allows you to see tips by opening a treasure chest inside the building, it also shows the ‘Mayor’ via a picture on the wall and best of all it has a Foursquare figure walking around inside the venue if they have just checked in. A commercial venue can also show some advertising or deals they have on in the info panel once you click on the building.
The other nice touch is that the buildings grow from small glass houses to big skyscrapers the more check-ins they have.
A nice simple visualisation of Foursquare and I hope it develops the potential geo-social gaming possibilities further. - Rich