http://techcrunch.com – Jack Ma, who has been CEO of Chinese ecommerce giant Alibaba for the past 14 years (since it was founded in 1999), will step down on May 10 2013 but remain as company chairman — focusing on Alibaba’s strategic vision, talent development to grow the internal leadership team, and corporate social responsibility efforts. Alibaba’s new CEO will be announced when Ma steps down. The news was reported earlier by the New York Times. Speaking to the newspaper in an email interview Ma said: “I’m 48. I’m no longer young enough to run such a fast-growing business. When I was 35, (IT news)