A few years ago, I met personal injury attorney Terry Bryant at a party. After introducing myself, we chatted about what I did and what he did and quickly discovered I had babysat his kids while I was in high school and living in his neighborhood. Small world, but that's not the point of the story. The point is, although we only talked for about 15 minutes before moving on to talk with other people at the party- the next day I received a hand-written note from Terry Bryant on firm stationary. The note was short but mentioned how glad he was to have met me, some of what we talked about and clipped to the note was a business card.
I saw Terry Bryant again a few months later and mentioned how impressed I felt that he took the time to send me a greeting. He says his policy is to gather business cards at whatever event he attends, and before he goes to bed that night to write a quick note to each new person and send them out the next day. He finds the practice effective and personal, something a Facebook shout-out just can't touch. I have adopted this practice in my own marketing a suggest you do too!