I have the same thing, using a Mag254, ch205 fox news is displaying a walking DTV logo. It is obviously a streaming of a screensaver in action from the receiver being used as a source.
I would think that advertising the source of the signals for the streaming video would not be wise, those operating the IPTV server probably do not realize this is happening on ch205.
As a side question... when something of this nature happens, do any of the Mods here have the ability to contact someone actually operating the server? I would hope so, some info should be passed to those actually running the service.