Sub-Saharan Africa has sometimes perked up a bit, only to slump again when commodity prices drop and the world economy falters.

ECONOMIST: Africa's economy

Predominantly because in between shots you have to light up, which sometimes takes a bit of time.

CNN: Interview with Abhishek Bachchan

In Nairobi, "tech-incubators" are springing up, places designed to give young IT entrepreneurs the space - and sometimes a bit of cash - to develop their ideas.

BBC: How much will technology boom change Kenya?