Microsoft's first foray into social chat bots didn't go so well given that propensity for racist diatribes. It's giving the concept another try, however, and this time it promises to be more successful. Twitter user Tom Hounsell has noticed the existence of Zo, a Microsoft chat bot currently being tested in the messaging app Kik. Effectively, Zo looks like an English-language version of Microsoft's existing Chinese bot, Xiaoce. After briefly gauging your personality, it'll participate in conversations like an overexcited teenager. The bot is far from perfect, but that's what's testing is for, isn't it?