We made a minor change to how the map works this week. Now, when you're zoomed out to the point that it would be impractical to show all the markers, the map shows *clusters* of hosts. If you click on a cluster, you automatically zoom to see all the hosts in the location of the cluster. In addition, when there are two or more hosts at the exact same location, a red marker with the number of hosts is shown, instead of the simple red marker.
There were a few other minor improvements - we hope you like them.
Here's a visual explanation: