Before we figure out how to make map-based mashups, it’s handy to look at a
number of examples to understand what is possible. As discussed in Chapter 1, there are
many map-based mashups, including Housingmaps.com, Chicagocrime.org, and the 1,000+
map-based mashups listed on Programmableweb.com (http://www.programmableweb.com/tag/mapping). Here are some specific
examples:
http://tutorlinker.com/ connects tutors to students via a
mapping interface.
http://flashearth.com is a mashup of various major online map
services displayed through a Flash interface.
Programmableweb.com lists Google Maps as by far the most popular API used in mashups. Mapping as a category is very popular. Yahoo! Maps and Microsoft’s Live Search Maps are also in the top ten.