The Amazon API has its uses (plaudits Smart Mobs).

As web legend Philip Greenspun taught me, great sites can be made by pulling in content from other sites. So the idea of web services holds a lot of promise. Google and Amazon APIs have been out a couple of years already, and there isn’t much obvious effect. So it’s nice to see a few real applications, and I’m sure there’ll be plenty more to come in Web 2.0.

The link contains an image rather than text, so here are the actual sites using the APIs: