Donovan Ransome showed me Heatmapapi which looks pretty damn cool. So I have been trying to make one.
I eventually gave up, the api needs server side programming skills and access. The programming skills and creating a accessible environment seemed too hard and time consuming.
Help
- http://delicious.com/davelevy/heatmap
- http://code.google.com/apis/maps/documentation
- geochalkboard on heatmaps