I went around to see my sister today, to see if she wanted to go and buy some teabags with me, and when I arrived she was a bit upset. As we worked on the site over the last months we've all had a creeping feeling that encouraging people to take more aeroplanes doesn't feel very comfortable. Now we've launched, the fact that we're becoming part of the global tourism industry and all of the problems it can create - well, it's starting to feel more urgent. We've always holped that once we've got the basics of Rentability sorted out we could try to work on how to do some good with it - but it's really hard to know what to do. Carbon offset calculators ? Articles about cultural responsibility ? Maybe features that allow people to search for a holiday within a given carbon budget ? Maybe we could try to highlight properties that are making a particular effort in that direction. It would take an awful lot of effort, but I'd love to finally make a decent train booking system so it's as easy to book a train from here to france as it is to book a flight. I'm not sure what we should do, and I'm wary of writing a bunch of stuff and sticking a carbon calculator on the site because it just seems tokenistic.