The New York Times Technology section had an interesting article this morning: an IBM engineer explains how he moves all his attention away from traditional email in favor of collecting all the information he needs from social network sites instead.
I heard a similar reason earlier this month during a talk about Intellipedia - when Chris Rasmussen mentioned that information is moved out of the traditional email channel into Wikis and Blogs instead. That way it is accessible to everyone and not limited to a pre-specified group of people.
