“Their ability to span many different worlds is a function of something intrinsic to their personality, some combination of curiosity, self-confidence, sociability, and energy.” (pg. 49) 

“The point about Connectors is that by having a foot in so many different worlds, they have the effect of bringing them all together.” (pg. 51) 

They “see possibility… while most of us are busily choosing whom we would like to know, and rejecting [others].” (pg. 53)

Malcolm Gladwell -- The Tipping Point: How Little Things Can Make a Big Difference