Download the MP3. Real business networking takes place in the country club, at the chamber of commerce and on the golf course. After all, the Internet is just for friending strangers on MySpace and poking friends on Facebook. If you said all that to Reid Hoffman, he might think twice about adding you as a contact in LinkedIn, the business networking site he started that connects over seven million professionals. Although his Palo Alto-based company is now profitable and growing rapidly, Reid still thinks he has yet to hit the tipping point. Reid’s goal wasn’t always to be an entrepreneur: He just wanted to change the world. His original career choice was “public intellectual”. Hear if his career switch is paying off. Less