I got a message yesterday from CS telling me that they rejected photo and video files that I submitted to them in 2010! Better late than never, I suppose. The reason was the same for all files: "File contains high levels of compression artifacts (halos, blocky, or fringed pixels)." None of the inspectors on the other sites are seeing compression artifacts in the video files. Makes me wonder what these inspectors are smokin'!
It also explains why CS is a low earner for me.