My take on this is that if I work for, say, the Chicago Tribune as the person responsible for handling a Twitter account (perhaps @ChicagoTribune?), my employer

My take on this is that if I work for, say, the Chicago Tribune as the person responsible for handling a Twitter account (perhaps @ChicagoTribune?), my employer can require me to give them the password for that account. This does not distress me. The other significant part, that employers can request account information for accounts "that the employee uses for business purposes" but can't "discharge, discipline, or otherwise penalize or threaten to discharge, discipline, or otherwise penalize an employee for an employee's refusal to disclose" I see as mostly placing requirements on employers: Make sure your staff is not becoming the "face" of your brand with their personal accounts.