Received a call from this (unknown to me) number this afternoon.  As is my practice when my Caller ID doesn't recognize the number, I let the call go to voice mail.  No message recorded...

A search using BING reported the number is the home number of one John Marcus RN in Grayslake IL.  I don't know John.  I have no current need for an RN.  Since no message was left, I have no clue why he found it necessary to call me...