Like a quite a few people I was drawn to the ReadWriteWeb post titled "A Few Nights of Hacking Produces Reading Radar". Basically, in a very short period of time (with minimal resources but maximum smarts) a guy called John Herren has created a Mashup called Reading Radar.
From a library point of view what is exciting is that Reading Radar "lets you scan the New York Times top sellers and read reviews and related book information from Amazon; all without the distractions of other content on both the New York Times and Amazon sites."
How exciting is that! Check it out for your self. But image if more libraries started doing mashups like this! Image including geospatial stuff (like the sort of stuff Paul Hagon demonstrated at Information Online 2009 in Sydney), so that the mashup also showed if the books on the best seller list were in the library closest to you! Maybe OCLC should consider this sort of mashup in the next phase of the very impressive mobile phone interface for WorldCat.
John Herren is clearly very, very smart. There are some smart people in LibraryLand (e.g. Paul Hagon from the National Library of Australia) mashing up content and giving people a richer and more dynamic online library service, but we could always use more people like this.
For those who like to know the technical details I have lifted the following information from John Herren's blog. Reading Radar is a Mashup by John Herren. It is powered by The New York Times Best Sellers API, Amazon Web Services, JQuery, YUI, and the Maintainable Framework.