You'll notice that links now have an $8 streaming video option where you only get streaming video of movies and TV the with no disks in the mail.
"Netflix loves that so many of us have turned to the convenience of streaming. But, did you know it only costs Netflix 3 cents to stream a standard definition movie, and 5 cents for HD; that's why they'd rather stream than mail you a disc. Some of the extra change saved goes back to the production studios, who used to only get revenue from DVD sales. [Business Week)