Poll Preview: Keeping It to Yourself -- The news media has lately been replete with stories detailing threats to consumer privacy: every day we hear about employers scanning company email, sites tracking every movement of users (and some advertising services tracking users' movements between sites!), or miscreants gaining access to home computers by guessing at an all-too-predictable password. So, this week our poll asks whether you use any specific tactics to protect your privacy online. Responses include using strong (not easily guessed) passwords, blocking or auditing cookies Web sites want to give you, using anonymous email or Web services, or using encryption to protect your data. Vote on our home page - and, yes, our polls are anonymous! [GD]