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					Originally Posted by ltl/fb  Oh, wait, he has my phone number now -- he will call if I defriend him.  I rarely answer my cell phone, but he has the same area code as my sister and in a moment of confusion I might pick up. | 
	
 One of the sites I read -- I think it might be Lifehacker -- suggests creating a contact on your phone named DO NOT ANSWER to which you assign all the numbers of people who are dead to you.  That way, when it rings, your caller ID won't have the real name pop up, which might otherwise have guilted you into picking up.  You then live your days completely untroubled by undesirables.
This only works if you have a cell phone manufactured after about 2003.