Recently, I had a client ask me to upgrade an embedded Google map for their locations page. The map allows you to view their locations by category: Manufacturing, Corporate, Engineering, or Technical.
The problem was that some of the location markers were too close together. Two of their plants in Ohio are just down the road from each other, so trying to show those two location on the same map that shows facilities in Hawaii and Connecticut was nearly impossible. The two markers in Ohio are directly on top of each other.