While the term mash-up has its roots in hip hop culture, the web mash-up seems a natural evolution of our need to customize and our love of hacks. (See an earlier post at artcodes on creating “clever solutions to an interesting problem.”) In Sampling the Web’s Best Mash-Ups, Business Week provides “a guided tour of the some of the most innovative sites that combine data and features of other sites to make something new.”