Placebase

Placebase is an online mapping service offering customizations and features which integrate private and public data sets in diverse ways.

[Placebase](http://www.placebase.com) is an online mapping service which specialized in offering customizations and features which integrate private and public data sets in many diverse ways. The company also offers a way to layer commercial and other data sets (such as demographics and crime data) onto the maps using an easy-to-use application programming interface (API). via: [Om](http://gigaom.com/2008/05/21/placebase/)