Perhaps I've grown less likable over the years, or maybe I've just forgotten how to meet people. The initial introduction -- the shaking-hands part -- I can still manage. It's the follow-up that throws me. Who calls whom, and how often? What if you decide after the second or third meeting that you don't really like this person? Up to what point are you allowed to back out? I used to know these things, but now they're a mystery.