Koushik Dutta, the co-founder of the popular CyanogenMod project has been contemplating the idea of an App Store which will sell apps for rooted devices. Usually many of these apps can't be on the official Android Market due to restrains from either the carriers or the OEMs.
Koushik posted on his idea of the App Store Google page his idea behind the App Store:
We need an App Store for root apps. We also need an app store for apps that are getting shut down for no good reason, other than carrier, or some random corporation doesn't like it.
Koushik also talked to Amazon about bundling the CyanogenMod App Store:
I've actually approached Amazon about bundling their AppStore in CM if they gave CM a cut of the sales. But they brushed me off, saying that was something they could talk about in a few months.
The CyanogenMod App Store will become a haven for apps removed from the App Store. The interesting point is how with Nintendo and Sony deal with game emulators published on CyanogenMod App Store? Also, how is the small team of CyanogenMod going to manage the quality and sanctity of rogue apps.