This week is CeBIT week in Hannover, Germany.

CeBIT  (Centrum der Büro- und Informationstechnik; German for "Centre of Office and Information technology") is the world's largest computer expo. Started last year, it also includes an exhibit area called green IT, since in recent years there are overwhelming interest, motivation, and incentive for the IT industries to become more sustainable, even as part of the solutions to a more sustainable lifestyle. 

This year, green IT world puts the spotlight on business models proven to be economically successful and environmentally sound