Simon Cox explores the different ways the digital world is changing how we live our lives. This week: Shadows in the Cloud - Simon talks to one of the team who exposed a highly sophsticated cyber espionage ring that had infiltrated everyone from the Indian Military to the email accounts of the Dalai Lama. But who's behind these networks: criminals, hackers or state sponsored agents? Robo-librarian - Click On reporter Peter McManus visits the world's most advanced automated book archive at the British Library's site in Boston Spa, West Yorkshire and comes face to face with a 60ft robot librarian! Virtual Tradeshows - Planes may be be grounded by the volcanic ash cloud but international trade shows are still going ahead in cyberspace at least. Simon wanders between the stands and schmoozes with the exhibitors at a virtual drinks party all from the comfort of the studio. But can these events ever take the place of being there in person? Votegeek - The general election campaign may be in full swing but how high up will technology be in the political parties agendas? For many the passing of the digital economy bill raised more issues than it solved and what was clear from the debate was how poorly informed many politicians are on technology. Simon talks to the founder of the website Votegeek who aims to get answers from the candidates on their technology policies and share them with the electorate.