Ex-Goldman Sachs banker Rajeev Gupta is a man with a dual purpose. First, he is cultivating his facial hair. Second, he is trying to revolutionise the way people use social networking sites. "Rameet Chawla, is not the only man who's left banking and grown a beard," Gupta tells us. "I've grown a beard too! – There are a lot of ex-bankers running around the world with beards now." Like his bearded counterparts, Gupta has quit banking. After nine years working for Goldman Sachs in Asia as a technology banker and investor followed by two years working for Tribeca Investments and three years at Macquarie, he's decided to do something different. Most people leave finance for venture capital or private equity, says Gupta – they want to "drive a company" rather than work for someone else providing advice on mergers or fund raising. He tried that, but after working in technology investing, he's now become a technology entrepreneur himself.