Trouble for NetFlix?

I saw some interesting information on this post at Lockergnome:

“Sign up now, and you can try Wal-Mart DVD Rentals for 30 days, free! To get started, click ‘Begin Free Trial’ below. There’s no risk, and you can cancel anytime.”

I think I'm going to go give it a try, but I am quite certain that this could spell doom for NetFlix based on Wal-Mart's aggressive pricing.