Apparently something went down yesterday regarding nickname changes and people changing their nicknames.
I'm not 100% sure what really happened, though Mammy was attempting to explain it to me.
I took a moment to talk with Helios, we're going to allow free nickname changes for the next 24 hours or so. You should take this time period to change your name to what it you want it to be. Please do not abuse this freedom! We're trying to be nice here.
I'm not entirely sure what Mammy did in regards to the Shop and the Shop item. I'll have to speak with him at a later date about that.
However the Shop system will be scrapped during the SMF 2.0 upgrade, as it would take a lot of effort to rebuild an addon that serves no real purpose for ZFGC. All SMF addon's will have to be rebuilt for the most part anyway, so if we do find a purpose for the shop in one way or another, aspects of it will probably be added back in.
Have fun and sorry about the lack of consistency and continuity regarding the subject of Nickname Changes.