This article is about virtual shopping that uses web 2.0 tools.

This article is about different search engines that use web 2.0 tools.

As the economy totters, it's easy to make fun of the concept of "Web 2.0" - the rallying cry of a generation of chipper start-ups spawned over the last few years with an unusual aversion to vowels.

Teachers are often portrayed as being clueless about technology, but ever more of them are putting that stereotype to the test. Web 2.0 technologies in particular have found a receptive audience among educators. Many use blogs to share ideas on teaching and technology, some of which might surprise students.