I am using markerCLusterer V3 on a db file from Filemaker to generate a (semi-live) map of current delivery locations, based off of addresses. Grabbing the lat/long from Go
I'm using: MarkerClustererPlus-2.0.14 and OverlappingMarkerSpiderfier-version-??
At first only the clustering works, clicking on a cluster, zooms in but 2 or more markers on the exact same point still stay a cluster even when zoomed in to the maximum. Unfortunately no spiderfier showed up :-(.
But than a noticed the setMaxZoom() method on markerClusterPlus. When setting this too your appropriate zoom level (15 for me) spiderfier takes over beyond the zoom level. It looks like markerClusters says it ain't my business anymore from here on it's up to spiderfier :-).