Everyone uses youtube to see his favorite videos. Most of the time, you need to subscribe to a certain user’s feed using RSS. Unfortunately, the ‘Subscribe’ buttons subscribes using their own notification system, and you have to be a member to subscribe.

Contrary to popular beliefs, youtube provides RSS feeds, but they are hidden. It’s mentioned on http://www.youtube.com/rssls that you can subscribe to a user’s feed as

http://www.youtube.com/rss/user/[insert username here]/videos.rss

And to a certain tag using

http://www.youtube.com/rss/tag/[insert tag here].rss

The question is: why did they hide this?