I have been playing around with Storify and looking at the potential for the development of content by both teachers and learners. There would seem to be great possibilities in the collection of a range of content relating to a particular news item, event or topic. The geographer in me has surfaced with a story around the recent Indonesian earthquake. Also check the learning tasks at the end of the story.

Indian Ocean tsunami alert after earthquake

Also check out - A gloomy global environmental outlook