A company you've probably never heard of became bigger than Facebook last week

A tech company barely known in the western world briefly eclipsed Facebook as one of the top five largest corporations in the world.Tencent, a 19-year-old company which now offers games and a WeChat messaging service, hit a market capitalisation value of $529.9 billion last week, overtaking its Silicon Valley counterpart at $528.5 billion.Around 750 million Chinese internet users are flocking to online games, messaging apps and online shopping, propelling Tencent and Alibaba, another Chinese com