One small and two major sites that have a long history of distributing pirated Android apps have been seized in a first of its kind operation conducted by the FBI, DoJ, and a variety of U.S. and foreign governments. These sites are:
Each of the taken down hosts is now displaying this FBI seizure notice
According to PC World, FBI agents downloaded numerous copies of paid Android apps as part of the operation before seizing all three domains and executing nine search warrants on August 21st. It's a little unclear whether the FBI and the DoJ will be pursuing criminal action against the site operators or whether anyone was detained.