Youtube's uniqueness has slumped in last few years because pretty much everything is being taken down due to copyright. Even Hulu.com has been regulated, now they can only show certain television show episodes at a limited time. Go to any Youtube video and its been taken down due to 3rd party.
These networks like NBC & FOX want viewers to go to their site to watch, but the problem is I will never download their players.
And social websites like FaceBook, Myspace, etc... have lost their value. These are sites that were focused on demographic of 16 to 29 (Just a guess) with the sole purpose of being hip with technology. But now you have to wonder, is FaceBook still cool anymore if your mom and dad have one?