I must confess that I'm not a great reader. At the moment I'm reading my son's 'Stig of the Dump' by Clive King and I've got a plant catalogue on the go.
On the simplest level, telecommuting makes it harder for people to have the kinds of informal interactions that are crucial to the way knowledge moves through an organization. The role that hallway chat plays in driving new ideas has become a cliche of business writing, but that doesn't make it less true.