Does your Facebook persona represent your true essence? Do you tweet to reinforce your values or to be heard? Are you the same person online as you are in person? These aren’t the easiest of questions to answer, yet with the advent of the social web, they will certainly help define your brand identity. Make no mistake, most of us are ultra diligent about our online privacy, but as Harvard’s Judith Donath explains, your language may say more about you than might think – here’s why —-