If you sign on to an offline game, can get a cape

Not sure if this is considered a security violation or just a minor glitch, but ... if you sign onto a server in offline mode using the username of someone who has a cape, you will appear in that cape. I did this by accident, using Dad to sign onto an offline game on our house's private (release 1.4.5) server since my son used my (paid-for) login name. I abitrarily used "Dad" as the player name, and appeared in game with a red creeper cape (my son was thrilled!). I'm guessing the actual user "Dad" attended Minecon 2011 and subsequently received the cape. We subsequently checked the "cape" page on the Minecraft wiki and started trying out usernames listed there. They all appeared in their respective capes.

I'm submitting this as private in case you don't want the general public messing with this.

Thanks,
zoward.