YouTube refines homepage feed, adds highlights option
If your channel subscriptions were starting to get a little unwieldy, you might want to tinker with several new feed options rolling out to the site now. Accompanying bigger thumbnails with more detail, users can now hide individual updates, limit them to new uploads or just unsubscribe directly from their feed. Anything that you’ve already watched on YouTube is grayed out to avoid unnecessary replays, while a new highlight view should ensure over-zealous videomakers don’t squeeze out less prolific contributors — and make some room for the next wave of (heavily-marketed) YouTube channels.
Article source: http://www.engadget.com/2012/08/03/youtube-feeds-highlights/