Best Buy does a good job of providing reasonable specifications, clear ordering information and suggestions for similar and competing products. The user reviews and the Q+A are useful research tools and answers reasonably well supported. For a lot of consumer electronics the devil is in the details as mfg often make very similar products with different specs. It sometimes needs a trip by users and suppliers to the store to get better info on the actual model on offer. Online data is incomplete. I expect over time the Q+A format will fail as the number of questions increase a better format would be an FAQ format of answers and open questions and a search tool for history.
The Store Pickup part of the checkout can be very painful as items are shown to be available then disappear from the cart while ordering.
I found also items stated not to be in stock were found on the shelf.
I think best buy is trying reasonably successfiully to integrate online and in-store business merging them together with a few rough edges to cleanup.