Good friend Ross Mayf ield writes in Forbes about "email hell"
"According to Gartner Group, 30% of e-mail is "occupational spam," characterized by excessive CC, BCC and Reply-All use. Not by coincidence, Socialtext (that Ross co-founded) customers commonly decrease e-mail volume by 30% and moving e-mails to collaborative workspaces that are designed for one-to-many or many-to-many communication. "
The other big productivity killer in corporations is meetings. I am constantly surprised to see too many of my client employees just go from meeting to meeting - then, of course come back to their desks to handle the deluge of email!
May be Ross can start something called Anti-Social to allow employees more "alone" time :)