I don't know about most others, but I plan get-togethers with friends, look up photos of moments I didn't get to experience with friends, communicate with busin

I don't know about most others, but I plan get-togethers with friends, look up photos of moments I didn't get to experience with friends, communicate with business associates, and generally discover things I may have never noticed without using Facebook. That's the extent of my social-network gene: the rest of my time on the computer I'm working.