The New York Times tells us that Wal-Mart wants to sell organic food:

Wal-Mart Eyes Organic Foods – New York Times
[...]

Wal-Mart has decided that offering more organic food will help modernize its image and broaden its appeal to urban and other upscale consumers. It has asked its large suppliers to help.

Wal-Mart's interest is expected to change organic food production in substantial ways.

Some organic food advocates applaud the development, saying Wal-Mart's efforts will help expand the amount of land that is farmed organically and the quantities of organic food available to the public.

But others say the initiative will ultimately hurt organic farmers, will lower standards for the production of organic food and will undercut the environmental benefits of organic farming.

[...]

The concerns raised (in the quoted section and elsewhere in the article) are important. Perhaps I am a bit paranoid, but additionally, what worries me is that this effort on Wal-Mart's part, perhaps unintentionally, has a divide and conquer effect by doing an end run around worker's issues (its current bete noir), since this could divert the attention or alter the priorities of liberals/progressives who would support (in general) both initiatives (worker's rights and organic food).