I will not make this a sticky for one simple reason--soon, we'd have a bunch of stickies bashing all the various chains, too. Bashing a business online is meaningless--venting, possibly, but ultimately does little to help anyone. As aquariasts, we soon learn to recognize the signs and symptoms of a poor source versus a good source. If anyone wants to write an article identifying those characteristics, without making generalizations such as 'Walmart sucks, never buy fish from them', I'll happily get that into the article forum.
Until then, I'm basically going to keep locking these down before they turn into huge monsters. Why? Because quite honestly, I do not think they serve a valid purpose, and they frequently turn nasty as people who have quality Walmarts in their area jump in to defend, then get bashed themselves.