The Rejectionist is still crusading to bring to light the racist actions of major publishers. As part of their most recent post on the issue they put in several links to sites promoting books by and about people of colour. For some reason though, a lot of the links were aimed at YA readers so I asked for something similar that's meant for adults. One of the comments led to a really great blog - the author's 2009 wrap-up post made a map of the world and all the countries in it that she'd visited through books that year.
It's so easy to read in a very narrow vein, you want to read books similar to other ones you like and you're friends with people who have common tastes. But I'm going to be doing some more travelling by books this year and try to read outside of my norm.