Extelligence is a great word. Defined as "all the cultural capital that is available to us in the form of tribal legends, folklore, nursery rhymes, books, videotapes, CD-ROMs, etc." I think Google (or any search engine these days) is conspicuously missing from that list. Being able to lean on the collective knowledge of my peers via the internet is the ultimate realization of this "extelligence." I wonder if blogs could/should be added in the mix?