So I found this forum and what I found really made me angry. This forum is italian and you can find it here. First of all, I found that a member of this italian forum is using a signature I made for our lovely Sailor Mercury, which you obviously saw floating around GC. Second, I noticed that the same member is using the sprites from O-SAP (the GC shop)... I got really angry.

Anyone wondering, I couldn't contact the member because it said I didn't have permission to do so. 
Well, this is the member I cought.

The sprites are on a website that say you can use them, we just make them special here. I'm not sure if she got them here or the website they are on.

Maybe you have to join the forum to contact her?

I joined the forum and made a thread... Now waiting for a reply

Good luck, because from my experience Italians don't speak much English and there SM fandom are known for being rather stubborn. I hope you get the sig back though.

The member I was talking about removed the signature, but didn't reply. Well, at least she/he removed it.