Hands down, for me, it was playing a key role in stopping AZ HB 2072, the attempted theft of 350 primo public big game tags, and subsequently putting AZSFW out of business forever.  From Illinois, I emailed and was granted a TV interview with Phoenix KTVK's Crystal Cruz.  She asked me to meet her & her cameraman at AZF&G Headquarters at noon the following day.  So I contacted MMer Allen Taylor to hand off the ball to.  The bribed legislator was also confronted by Cruz, and he folded like a lawn chair during one of the 3 TV segments.  AZSFW criminals pulled their lobbyist from the statehouse the next day.  And since then AZ formed a constituent group to prevent further such calamities.  
One guy can make a difference.  Posting anti-SFW comments on web forums is good for educating newbies, but if you really want to make a difference, email legislators and contact media when you see criminals coming after YOUR public land tags.  I enjoyed doing this for all honest, deserving sportsmen, not just myself.  I believe in the old school Teddy Roosevelt vision of the North American Model for Wildlife Conservation.
My 350" Nevada archery elk is a distant 2nd.