I’m at IFA as I write this, and in Europe, green clearly does matter. Here, they even have a viable Green Party, but in the U.S., I sometimes wonder whether we care. This was showcased in a presentation in which Sony ranked geographical areas in terms of the importance of green, and the U.S. came in last. This week I thought I’d list the green efforts of four vendors, each of which has green initiatives, and ask you the question: Which approach matters to you?