This might be a great tool for an extended project, e.g., have your students create an infospot audio guide to their local community. Lots of examples are linked on the front page, and there is an iPhone app to scan, listen, and record wherever you happen to be. There are currently over 1300 guides created by users, and more coming.
100s of guides to learning and studying in dozens of languages. Especially good for writing, reading, and critical thinking skills. Also has some materials for students with learning disabilities, e.g., ADHD. Mainly native-speaker oriented.
A great example of a clearly defined lesson in guided reading and thinking in an historical context (Ghandi v. Ho Chi Minh as protest leaders). Ms. Duvoor models how to think like a historian as you read original documents.
Podcats are updated every couple of days. Created by Jeff McQuillan. Topics are mainly American-oriented, and each podcast includes a "Learning Guide.l" Podcasts seem mainly for low advanced, university/adult students.
This resource from the University of Victoria offers a set of advisory files primarily on writing about literature. It has basic information about types of essays, essay organization, basic steps in writing process, types and function of paragraphs. The website also offers guidelines on writing clear sentences, and introduces rhetorical and literary terms. -- From Lena Shvidko
Very, very complete OWL.
Claims to have "All the words in the world pronounced by native speakers." If you ask for a word to be pronounced, another user will pronounce it for you. You are asked to help by recording your own native speaker pronunciation. Looks like an interesting use of social media.