So Wal-Mart is attempting to compete with the big boys for a new video service. Sure, they may have chosen to not support non-IE browsers because of the whole DRM/Windows Media thing, but I’d be surprised if this was the case. They could have avoided a good amount of bad publicity from an overly critical audience had they planned better and redirected FireFox users. Not to mention it works with a hard refresh (Ctrl + F5). This article has a good discussion going. Bottom line is, this kind of thing should never happen.