Good looking, easy configurable plugin. I was using XML Google Maps, but that stopped working.
This worked for me out of the box, no need for API 's or whatever. I did add the W3 Cache pointers in the support thread, even if it didn't seem needed on my chrome browser tests.
Would be nice to be able to edit saved maps, but this is a very minor detail.
Also, not sure if there is a way for the maps NOT to show businesses and other points of interest?