Young, geeky and black in MemphisFacebook has more than one billion users and hires more than 1,000 people each year in the US. But in 2013, just one of these new employees was a black woman. Fewer than 2% of employees at Google, Twitter and Facebook are black. The tech industry is trying to tackle this diversity problem - but efforts are also being made at the grass-roots level. If you've ever read a profile of a successful US t
