I always thought you had to identify that you were recording a conversation with someone when you call them.  Maybe that is no longer a law.

Wisconsin Governor Scott Walker was "Prankd'" into discussing his strategy to cripple public employee unions, promising to never give in! He was duped by a journalist posing as a conservative billionaire.  This audio has already gone viral as Wisconsin citizen's continue to protest.

A good rule of thumb in 2011 is to never say anything you don't want repeated to anyone.  It's a heck of a way to live and I believe more in being who you are and letting the cards fall where they may.  The alternative is to not trust anyone and that is no way to live.