Combining social networking and playlists on a content-specific site doesn't overcome either technique's limitations

*It may actually just introduce new problems.*
	-- Users need to establish a separate new friend network on the content-specific site before this feature can be of much use to them.
	-- The net effect can be like walking into a store where you need to spend weeks making friends with the sales clerks before you can see the best merchandise.
	-- Most people will just leave.