Wow, there are a lot of products you should not buy, if this is how you honestly feel. And I wouldn't buy the Nook either, because I'm sure they will soon be sold in WalMarts too.
Having known several people who have worked for Wal Mart, I can tell you that they are no worse of a place to work than Best Buy, or Target, so if you shop there, you better think twice! Best Buy, as one example, recently fired it's entire IT department to outsource to a contract angency. Some of the department was offered jobs by the new agency, but for less pay and benefits. Work at a Best Buy store, and you'll make about as much as a Wal Mart employee (which where I live is about $9, which is competitive to not only Target, but two major grocery stores, that are union by the way).
Yes, I fully realize that Wal Mart has put local retailers out of business, much the same as Amazon has put local bookstores out of business. It sucks, but people demanded lower prices, and that can only be provided with the economics of scale.