You mean you don't save all the codes you've used? 
I agree though. I seem to recall that before the introduced server transfers and name changes, all the codes WERE labeled with what they are. I wish they'd put it back that way!
I always save every email when I buy something. Always.
Myself, I just looked over my account and laughed, "perk, perk, perk, retail, perk, perk." It's like a chant.
Please read my FEAR/Portal/HalfLife Fan Fiction!
Repurposed
What, you didn't memorize all your codes?
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Who do I write a letter to to get them to actually label all my game codes on my CoX PlayNC page as something that they were actually for?
Seriously, on one hand, they labeled something "City of Heroes® Wedding Pack" (which is PERFECT), and on another they labeled something "Perk", and I have three different "Retail" entries, among other things. They've added so many different codes lately, and are likely to keep adding more, that a little elaboration would be appreciated...
I'm not saying I can't use some deductive reasoning to figure out what's what, but really, how much effort does it take to command some stooge intern to put a few extra characters on this list, especially since they seem to be adding more and more codes for the extra stuff they're selling?
K, I'm better now... enhancing my calm... be well!