the header for this thread is misleading. wal-mart doesn't plan to "kill" blu-ray, that part is an opinion. that being said, it's something people should realize in a header like that.
just coz walmart would be selling low cost HD-DVD players in no way means they'll stop selling blu-ray players. in fact, they could just as easily annouce the week after that they've contracted another company to make cheap blu-ray players.
the relevent question is, is it a good business decision to put emphasis on HD-DVD over Blu-Ray? my personal opinion is that, for Walmart, yes. low prices are key for walmart; not just comparable low prices, but absolute low prices, and that's the draw for their target customers. if a blu-ray disk is $5 more, to wal-mart it means there's an opportunity to sell HD-DVD disks at $5 less, and have the customer spend the $5 on something else.
that's the discussion that should be going on, not calling names and accusing others for being ignorant.