In my humble opinion the mpmovieplayer tag should not be used or even exist. There is no such class within the iOS SDK and very few questions are using that tag.
On the other side, there is a tag named mpmovieplayercontroller which represents an existing class within the MediaPlayer SDK, part of the iOS SDK. That tag is very commonly used and well understood.
Adding mpmovieplayer as a tag does in my opinion not add any value to the system but actually does trigger needless fragmentation.
Hence I am hereby asking to discuss the removal of that tag to get to a well suited result and or proper explanation on the need of that tag.