No E-mail Fridays?

Check out this article about "no e-mail Fridays" that are being implemented as employees uproar:
http://online.wsj.com/article/SB119205641656255234.html?mod=djem_jiesww&reflink=djem_jiesww

Since it is only 12:00 and I have already received 21...make that 22 e-mails today and sent 14, I can totally understand why employees would be enraged at the thought of not using e-mail for a day. E-mail is the once constant in all jobs. I constantly refresh my inbox at work and love to see the icon pop up when I get new mail. I cannot imagine a day without it.
I understand the idea behind this, that is having more face-to-face conversations and relations with customers, but does this good outweigh the bad? I think not.
Without e-mail I would have to call people often, which wastes a lot of time since you generally have to speak to a receptionist first, or leave a message, or keep calling back until someone picks up. Most of my e-mails are internal, which means that I would have to get up from my desk and walk to people's offices to talk to them. It appears that e-mail is an essential factor to eliminating muda in the workplace. I'm not sure this "no e-mail Friday" idea is the way to go. Afterall, is e-mail the root cause of the problem? I think not!