Think of it as a world-wide giant bulletin board

Remember folks. The internet is forever. The internet is for everyone. Anything you post could come back to haunt you.

Like when a police officer in the UK wrote "Rob Ward can't wait to bash some long haired hippys up @ the G20." That's the kind of crap people get fired over. It's one thing to state your disagreement with a group's stance (which I'm guessing is verboten in the police force in the first place), it's another to state your willingness to physically assault said group as part of your job.

When you log onto the internets, there should be a message box that appears stating "By posting information on the internet, you acknowledge that everything you write is viewable by the world, and can be used against you in a court of law."