Interesting demo, I did a similar one but with mouse movement: http://www.patrick-wied.at/projects/multiuser-heatmap/ http://www.patrick-wied.at/projects/multiu

Interesting demo, I did a similar one but with mouse movement: http://www.patrick-wied.at/projects/multiuser-heatmap/ http://www.patrick-wied.at/projects/multiuser-heatmap/ but I think my server wont handle lots of users since I'm using an early version of Ajax Push Engine. nowjs seems to perform really good. Btw: nice solution for the "too much data" for heatmap.js (at the initial heatmap rendering) issue :)