Adobe is shutting down two of its app stores dedicated to mobile and desktop application distribution, Adobe InMarket and the Adobe AIR Marketplace. The decision, the company says, was based on developer feedback. Adobe says it will now focus its efforts on helping developers publish their apps on multiple platforms, including official app stores like Apple's iTunes, Google's Android Market, BlackBerry App World, Intel's AppUp, Samsung Apps and Toshiba App Place. I had never heard of these two App stores until today.