In Ithaca, NY there is a Super Wal-Mart opening in the next few weeks. Actually, unlike in other communities Wal-Mart just retrofitted a current location to allow for the expansion. Whether you like Wal-Mart and their policies or not - this was a good move. They often times just move locations, leaving a massive space that no other outlet could really ever utilize.
Now, there are lots of reasons to question Wal-Mart, but they have just launched an initiative that will help support local agriculture and local farms. It sounds promising!
Here's a link to the article in the NY Times: Wal-Mart Plans to Buy More Local Produce.