Whether communication be a skill, art, or combination of both, there is no doubt that being able to communicate effectively is imperative to a successful business. Advances in technology have fostered the rapid growth of multiple channels of communication. We are increasingly dependent upon email, instant messaging, and text messaging. Add in cellular phones, and you never need to be unavailable.
This of course can be seen as a problem itself, but the expectation of being contactable and available has never been greater.