Cities that Need Hostels

I've been editing the Where to Open a Hostel page. I added a mapping tool. I'd like to make maps of countries that need hostels with blue dots for cities with existing hostels and red dots for places where hostels could be developed. Maybe even on the state level for bigger states in the US like California. Mainly North America at the moment.

At the moment I'm using http://geocoder.ca/ to get the latitude and longitude of cities, but will try to find a faster way.