I've just started using "Reeplay.it", but adding to my library with my PC when I see something interesting, and then using xbmc on my xbox to view.

But I usually only want to view stuff once. So, can I have an option to subscribe my xbox to an "unviewed" list only ?
It would be a bonus if I could also choose to go back to the full library to see some viewed items if the mood moved me, but I could do without if I can just have an "unviewed" option for my xbox...