We have ‘fair trade’ coffee and ‘fair trade’ bananas, so why not a ‘fair trade’ mobile phone? Bas Van Abel and his Amsterdam-based colleagues are busy perfecting a cell phone that isn’t made by exploited labourers. We also explore how and why new technologies are helping to reshape our language with Tom Chatfield, author of a new book called 'Netymology'. And finally we look at the concept of the useless machine with Brett Coulthard, CEO of the Frivolous Engineering Company.