Hmm. Well, I don't mind opening my door but usually it's just a kid asking for fund-raiser money or something. Canvassers appear every now and again, too. Every once in a while one of my neighbours will knock on the door for something.

If I didn't feel safe or found a person I didn't want to talk to, though, I would just look out the window and wait for the person to leave.

What would you do if the neighbour had something seriously wrong - fire, accident / illness, etc?