As an employer or manager frankly it's neither your responsibility nor your business to investigate how your reports are spending their personal time. First of

As an employer or manager frankly it's neither your responsibility nor your business to investigate how your reports are spending their personal time. First of all, don't lose any sleep over it. If one of your guys is a huge troll it's not your fault that you didn't know. These assholes are going to look like everyday normal people in RL. Secondly don't go snooping on your employees without cause. This should go without saying.