Expert marketing advice: Facebook allows you to separate your personal and professional identities, according to Kevin Pho, M.D., a Nashua, N.H., internist and founder and editor of http://KevinMD.com/. "I always advise doctors to take a dual-citizenship approach: having personal pages closed and only available to friends and family, then having more professional Facebook pages open to the public, so your patients can see," Dr. Pho said during a recent interview for Dermatology Times magazine. He makes a good point. We should separate business and pleasure by having separate pages on Facebook. It's not necessarily that you might post or write about something inappropriate, but your friends could very well post things that are not for prime time.