RT @richardbranson: If you can’t write your business idea on the #BackOfAnEnvelope – it’s rubbish http://t.co/iaxXCvqCFc @VirginStartUp

RT @richardbranson: If you can’t write your business idea on the #BackOfAnEnvelope – it’s rubbish http://t.co/iaxXCvqCFc @VirginStartUp