I want to thank Bill Boyd , again, this time for pointing out this clip illustrating digital literacy. Bill writes:

This amazing video from Michael Wesch, Assistant Professor of Cultural Anthropology at Kansas State University, captures in 5 minutes the full implications of Web 2.0 for learning and teaching in general, and the way in which we are now learning to read in particular.

Bill  describes better than I could how important it is for us to acknowledge the importance of  Web 2.0.