I think they get a little carried away with the 'in your home' bit at audioholics.
Yes, there are speaker room interactions that can at times be significant. It has as much to do with a dealer having a crappy demo room for the speakers as it does with your room.
There have been people who found that the speakers they bought sounded a lot different in their rooms than at the dealers. The dealers where I auditioned had decent rooms for their speaker setups and I doubt any of the speakers I listened to would sound a lot different than in my room. On the other hand, auditioning at your local bestbuy might not give you the most accurate representation of what a pair of speakers sound like.
Use some common sense when auditioning.
