Against the Browser's Will: Make Mashups Talk Across Domains
With all the great Web service APIs out there today, making mashups to extend public Web-based apps is a new passion for many developers. But cross-domain restrictions, built into all major browsers, are an aggravating foe. Learn to use a PHP proxy or JSON to eliminate your mashup frustrations.
by Dan Theurer
March 14, 2006
aps are not only very useful, but they are also cool! In recent months, we have seen a lot of innovation in the area of online maps. Today we are far beyond the time when Photoshop was the most efficient way to overlay data onto a map within your homepage. There are a couple of different new solutions to choose from if you want to embed interactive maps. The "oldest" developer product is Google Maps. Microsoft offers Virtual Earth. And my employer, Yahoo!, offers Yahoo! Maps! This is all really good stuff!
These solutions and tools enable third-party developers to create applications that overlay all sorts of location-based data onto commercial-quality map implementations. I want to highlight two great examples: Housingmaps.com was one of the first popular applications that uses Google Maps to create a so-called mashup. In this example, the user gets Craigslist's housing posts displayed onto a map. The Local Event Browser is another example that shows what can be done by combining various data sources.
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aps are not only very useful, but they are also cool! In recent months, we have seen a lot of innovation in the area of online maps. Today we are far beyond the time when Photoshop was the most efficient way to overlay data onto a map within your homepage. There are a couple of different new solutions to choose from if you want to embed interactive maps. The "oldest" developer product is 
