I'm sure some of you have downloaded a video from youtube, or used another website to loop a video. My question is: How are these websites able to exist? First of all, many of those websites have a name like "youtube-mp3.extension". For example: http://www.youtube-mp3.org http://www.listentoyoutube.com/ http://www.youtubeloop.com/ Isn't that a trademark infringement to begin with? Surely Google has enough money to take those down. It would be different if these websites would just keep popping up, but many of them have existed for a long time. Other than the name, I'm sure Google doesn't like the fact that people download videos from Youtube. Else they would've build that feature in anyway. Can anyone explain this to me? Does Google just don't care or what? I can't imagine that. These websites aren't small either, they have quite a lot of traffic. Youtube-mp3.org has a global rank of 1,176 and a US rank of 995 according to Alexa.