That's funny, I called Bestbuy about a year ago and they didn't even know what a Power supply was, they figured I was refering to a power adapter (for a laptop). I called two different Best Buys by the way.
I think we need to be able to tell people where to shop as well as where to potentially avoid. It's obviously up to people to do what they want, but what happens if they were to come asking for opinions anyway? We're a forum, and it should be up to us to behave as both sides of the aisle. Of course, I would agree we can't go HAM and purposely bash the hell out of a company, but sharing our experiences, good or bad, is a must. I would feel like a turd if somebody came through here asking about a place I had a negative experience with and two weeks later come back saying they wasted X amount of time and money when I could have explained what happened to me and allowed them to choose based on a more educated opinion. It is the responsibility of both parties to use fair words and judgement. Be honest, be reasonable.