While many human resources managers spend sleepless nights worrying about the negative things employees may be posting on the Internet about them, this post from our sister blog technologylawsource.com reminds us that the nice things they have to say can get employers into trouble as well. Lesson for employers: Make sure your social media policy makes clear that employees who endorse their employer’s products or services on-line must disclose their employment relationship so that consumers are not misled into believing that the endorsement is free from bias.