I used to think it was because it didn't keep track of watched videos cross-platform, because I use it from two laptops, an Xbox 360 and a PS3. But then I started seeing videos I'd watched on PC pop up...Why does it do this? Is Youtube seriously not capable of adding a simple if watched=yes, don't show it stupid or have I broken the algorithm somehow? Or worse, is this behaviour intentional? My recommendeds, my entire front page is loaded with stuff I have watched. via /r/youtube
