What exactly is the benefit of typing out "Magic" the Gathering" everytime you refer to them? Wouldn't it be faster and easier to write "MtGox". It's not like people around here aren't going to know which service you're talking about if you use the usual acronym.
Are you somehow trying to say that they should be considered to be more legitimate, or more trustworthy, or more competent because their acronym represents some long company name from their past? I don't get it.