Social Networking Sites
I'm not going to name any one in particular, but you know which Websites I'm talking about. There's a plethora out there. Some are generic, while some focus on specific interests and locations. Matters not; the investigators are going to find them and anything you said or wrote that is totally stupid.
The old school investigators used to get their hands on your high school annual to read about your youthful exploits. Being voted the "most likely to be incarcerated" will not get bonus points with the civil service board. But now what they'll be reading has been authored by you, not classmates.
Now, there are high-tech investigations going on with several of the social networking Websites. Most offer assistance to law enforcement. Egad! Some tricky investigator may even have a stealth site just to check you out. One cannot consider this a joke or youthful prank. Just remember if we can find it, so can others. Say if you are hired and somebody wants to create some reverse problems for you since you are now the fuzz. If you posted it and all of the nonsense, you'll reap what you sow.
Am I against these sites? No, I am not by any means. In fact, I post on one myself for professional reasons. But I am guarded about the information I provide because whatever I place there, all - and I mean all - can see it somehow or other.