Google have made some cool updates to the Maps Data API. One of the new features is geospatial and attribute search. The search allows you to select features on a map according to different criteria. Currently, the Maps Data API supports spatial search (search over an area of the map) as well as attribute search (search over the attributes of features of the map).
Google have provided an example College Finder map that uses the new geospatial and attribute search. The map pulls in data from a Google My Map consisting of approximately 3000 U.S. 4-year colleges. Using the geospatial and attribute search you can search the map by location and / or by attribute (in this case either 'public' or 'private' colleges).
Via: Google Geo Developers Blog