This is true here in the Sacramento market. Comcast is paying for the playback, switching, and digital compression equipment installed at local stations so that local stations can provide a separate feed to Comcast via a fiber link. As far as I know this is being used only to play different versions of Comcast's own spots. The local ABC staion where I previously worked has installed equipment to be able to play different commercials on the Comcast SD and HD feeds. In other words three different versions of Comcast spot can be fed out at the same time. One to the Comcast SD viewers, another to the Comcast HD viewers, and a third to all other viewers. I know the local FOX station has also done this and had to purchase a second FOX splicer to do so. They can only play out two versions at once. One for all Comcast viewers and another to all other viewers. I assume other local stations are in the process of or have done the same.