Today, it seems that anyone involved in e-commerce must be online and available, all the time. You know how it is because you live it: BlackBerrys and Internet-enabled cell phones provide instant delivery of e-mail, wherever you may be — whether working, or spending time with family and friends. Online etiquette seems to require that you reply instantly, regardless of your other responsibilities or nonwork-related activity in which you may be engaged.

Clients demand instantaneous response and around-the-clock availability. With online access, a cell phone call that may not get through or be answered just isn’t fast enough.