The dramatic growth of Right to Carry (ie concealed weapons) since 1986 occurred beneath my radar. "Shall issue" means a carry license will be issued if you pass the background check. I am getting mine - not because I want to carry, but because I want to be able to if I want to. It's a freedom issue. Brits and Aussies: Eat your heart out.
A nice summary of the subject, with maps, at RWN. Here is the current state of the states: