Mark Zuckerberg by Brian Solis Mark Zuckerberg and 900 million of his friends hit Wallstreet with America’s largest IPO and has once again made history. Facebook’s first trade was $42.05 giving the social network a valuation of ~$115 billion.  In the process, Zuckerberg became the 29th-richest man in the world with another half dozen employees also becoming billionaires. It’s also estimated that U2’s Bono will make more from his investment in Facebook than in his entire 30-year music career. As…