Apple has started filing a bunch of patents on mobile applications. That might not be so interesting in and of itself, but if you look closely at the figures in one of the patents, you can see that it's a copy of the third-party Where To? application, which has been on the App Store since at least 2008. There's also a side-by-side comparison which should make it clear that the diagram was copied directly from their app. Even though it's true that the figures are just illustrations of a possible UI and not a part of the claimed invention, it's hard to see how they didn't get some of their ideas from Where To? It might also be the case that Apple isn't looking through the App Store submissions in order to patent other people's ideas, but it's difficult to explain some of these patents if they're not. And with the other patents listed, it's hard to see how old ideas where 'on the internet' has been replaced with the phrase 'on a mobile device' can promote the progress of science and useful arts. This seems like a good time to use Peer to Patent.