<A href="http://www.telegraph.co.uk/technology/news/8921033/Staff-to-be-banned-from-sending-emails.html" target="_blank">Believing that e-mails are a waste of time, the head of one European firm</A> wants a "zero e-mail" policy in effect within 18 months. Thierry Breton, CEO of Atos, says the 5-20 hours per week people spend handling such messages is not productive.