Quick and easy marker clustering? Marker clustering - What that? Marker clustering is the process of grouping sets of markers together to form new more generalized markers based on geographic proximity and relative zoom levels.

Thanks to some very handy JS code from acme.com market clustering has never been easier. Want to see a real world example? We've implemented "Clusterer" based marker clustering in Radio California. (You can get a real feel for "Clusterer" by zooming in and out.)