Law enforcement will be exempt, of course.
No, people just need to not trust anything someone puts on a facebook page.
Of course. All those sting operations rely on false postings and violations of the terms of service of the web sites. And since when does the government obey the law anyway?
A simple requirement that any law or regulation would apply equally to everyone, regardless of whether or not they work for the government would go a long way towards improving our society.