One of my favourite tech entrepreneurs.<p>If any of you haven't read Michael Lewis's "The New New Thing" ( <a href="http://www.amazon.com/New-Thing-Silicon-Valley-Story/dp/0393048136" rel="nofollow">http://www.amazon.com/New-Thing-Silicon-Valley-Story/dp/0393...</a> ) its a great book about Jim Clark and the dotcom boom.
I respect that:<p>The 67-year-old father of a newborn baby girl is taking things a bit easier these days, spending his time on his yacht, Athena, writing code and programming all things Apple.
He mentions that his investment in Twitter is a lot riskier than Facebook, because they haven't found a way to monetize. I'd say that the biggest risk to Twitter's business isn't monetization, but replacement (dying like MySpace). Both risks seem slim right now.<p>Twitter has stated their business model is advertising. If I'm recalling correctly, the sourced estimates are that they're at a $200+ million run rate on sales. If they get to $500 million in the next few years, that's a great base, even if it's not on Facebook's level.
I sometimes got to sit next to Jim Clark during lunch when I worked at Silicon Graphics. He's just walk into the cafeteria and sit anywhere and sometimes it was with us systems engineers. Interesting to listen to the chit-chat.