The document discusses the evolution of the web from Web 1.0 to Web 2.0 and why teachers should care. It notes that Web 1.0 involved static pages created by few, while Web 2.0 enables mass participation and user-generated content. Today's students are actively using the web to IM, blog, upload videos and photos. However, classrooms still resemble yesterday's model. The document argues teachers need to teach digital literacy skills and how to collaborate online to prepare students for a changing world.