I would say it's not NBC's fault. It is the producer's, or whoever created the graphic, fault. For example, say you're local TV station has a typo on one of their graphics. Who do you blame, the person who created it, or the company that owns the station?
You guys can't keep putting the blame on NBC when something goes wrong on The Weather Channel.
And to add.. it really wasn't ALL that big of a deal. I know I would not have noticed..