The UK publisher Dorling Kindersley have just announced the launch of their app store where they now sell Android apps to the public. You can also vist their store to find links to Tunes so you can buy iOS apps.
The app store currently has 2 sections, one for the US and the other for the UK. DK are also planning to add more sections for Canada and Australia, but I don't understand why they're hamstringing themselves this way. A digital market is a digital market; geographic restrictions shouldn't matter.
ALso, I spent a few minutes looking at apps for phones that DK don't have apps for (Symbian, Blackberry). DK aren't doing a very good job of excluding other company's apps from their app store. I suppose that's okay, but how is it a DK App Store if it has everyone else's apps?