I see multiple references to generic or default photo streams playing rather than the user's. I thought I'd try it for the default stream, thinking it may be like the screensaver I see on GoogleTV. Well, I set up a photo stream and added a few photos and the screensaver displays them no problem.
The only photo stream that I see available to me is the one that I created. Where's the default or public photo stream that I expected to find?
EDIT: Never mind. I deleted all photos and deleted all photo streams, and the screensaver played with the default images. Both of them. Just deselecting "include in Roku screensaver" for all streams accomplishes the same thing. Disappointing reult, though.