Create Map Illustrating Worldwide Member Locations

We are looking to create a map illustrating worldwide community membership with clickable icons to display user information including active email addresses. Below the map should be an accompanying text version of the members and their email addresses, searchable by country/city. Currently we use mailchimp to gather our member's location, which we import into a Google Fusion Table, which produces a map. It looks like this: [login to view URL] The problem with the fusion map is it doesn't allow more than one person to show up per location and has a 500 entry limit. Also there is no way to present the information in text bellow the map incase someone doesn't know how to use it (our demographics include members of all ages and skill levels). Whoever takes on this project should know that we are expecting 1000s of subscribers almost immediately after a major publicity launch so the map and table must be able to accommodate an influx of people.