Be careful what you post on Facebook. It's not a free pass for whatever you think. Threatening another individual, business or group can land you in jail.23 year-old John Halacy was booked for Aggravated Harassment-2nd degree for threatening another person with bodily harm in a Facebook post. Be careful online, and be courteous. More on this story here. Remember, it's not whether you think a post you made is threatening or not, it is what the police think if someone turns you in.