The One Million Tweet Map
http://onemilliontweetmap.com/

This page maps the last geolocalized tweets delivered by the twitter stream API. Map data is updated in real-time – YES – IN REAL-TIME – and they keep “only” the last one million tweets. Each second, about twenty new tweets are added (and the twenty oldest tweets are removed to keep the same number of points on the map). They limited this to keep their servers calm :) but we can do higher rate. Play with filters and check the nice heatmap rendering! This has been added to the tools section of Research Resources Subject Tracer™ Information Blog. This has been added to Business Intelligence Resources Subject Tracer™ Information Blog.