I don't get it either, it's just a central place to search (and view) for the show(s) you want. I've found most often the show you want to watch just sends you back to the particular network's / channel's web site for viewing.
I just use fastpasstv instead. I wish too that they kept more back episodes and a full length videos up. What I want is never there, and if I don't keep up week to week, it's gone.