Following on from my FourSquare post below, there are a couple of interesting sites that allow you to viaulise your FourSquare checkin history on a map.

Where Do You Go generates a Heat Map of your checkin history.  Here’s mine:

Another type of visualisation can be seen on Weeplaces which looks very impressive (it uses OpenStreetMap mapping too) The site traces lines between each day’s checkins, allowing you to visualise your movements for your entire checkin history or use the sliders to select a shorter time period, right down to a single day. The output looks something like this:

You can see my checkin history on Weeplaces here. Nice!