Ram Shriram is No. 271 on the Forbes Billionaires list. He's a veteran of Netscape and Amazon, and an investor in StumbleUpon and Google. He owes his place on the list to the latter, where, as an angel investor, he had more shares than anyone besides the company's founders at the time of its IPO. Now he acts as a "sherpa" to young companies, helping guide them to success. He also participated in financial-planning startup Mint's latest round of financing. Mint CEO Aaron Patzer shares a story about Shriram's investing habits after the jump. If you want this guy as your startup sherpa, take notes.