"every wall or chat posting makes unnecessary at least one e-mail, maybe several."
Really? The noisy little comments and messages on facebook would have been emails? He must have been getting a lot of one word emails then like "sup", "hey liked the post", "i agree", "nailed it", "you're wrong", "me too", "here's 20 completely irrelevant links", etc.
Email still serves a purpose (one that most of us rely on). Here's my question. What would impact your life more, the utter disappearance of email or the utter disappearance of Facebook?