How come YouTube doesn't append the video title to the video URL?
I know they are owned by Google so good SEO isn't exactly necessary, but from a user experience stand point it makes much more sense. It allows people clicking links posted by others to be able to see the title of the video.
A lot of sites, such as Reddit and even this site create links with the title appended at the end.
I understand that only
http://ux.stackexchange.com/questions/13097/ is processed and the rest is moot, but it still is a huge convenience for the rest to exist as an end-user.
What I don't understand is why YouTube doesn't do this. Is there any real reason or is it just laziness?