So let's just say that your went on a vacation and  you MAY have written it off as a business expense. After all, you did tell your wife or girlfriend that you like your job. If that's the case, you may not want to post those pictures of you and her on the Tea Cups at Disneyland. It looks like someone finally told Uncle Sam about Facebook.

If you haven't heard, the IRS may be snooping around your Facebook and Twitter for evidence that you are cheating on your taxes. So if your accounts show you on a vacation or any other incriminating evidence that you wrote off a vacation or anything else that you claimed as a business expense, you could find yourself in hot water.

The bright side to this is that the IRS can't look at everyone's Facebook or Twitter account, they will only be stalking those who could be flagged for an audit, have been audited or show behavior that would call for an audit.

Just this guy's suggestion, but putting your Facebook privacy settings on "lockdown" status, may not be a bad idea.