I am often asked about the difference between a geek and a nerd. Here's what I think: A nerd is usually a physically awkward, not necessarily bright, unmercifully goaded and intentionally meek individual. Whereas a geek, in my humble opinion, is usually an exuberant, ubersexy, intelligent, self-confident technoperson who gets around, and knows how to live life to the fullest. Last winter, I had lunch with two of the sleekest geeks I know...Markus Sandy of apperceptions.org and Chris Ritke of 49media.com. It was an exceptionally beautiful winter day in Marin County, with San Francisco right across the Bay.