So we had our mid-summer event on Solia, "Ghostmas". [It's kind of 'Christmas-in-July' meets 'Early Halloween' meets random Internet Culture...]
There was a contest to spot the Ghostmas NPC first and quote him to get a prize. He was posting all through out the 2 week event and the prize for catching him was a Nyan Cat Scarf.
In addition to that, you can go around spray painting people and random graffiti would show up; one of those was the word "Nyan" on your avi over and over again. So people were saying "Nyan" a LOT.
I guess typing Nyan over and over embedded into people's brains that N comes before a Y, so "Yanagi" became "Nyanagi". The event has been over for a month now, and people have *just* now stopped calling me "Nyanagi".
Anyway, people called me it so much I made a siggy pic of it. I'm still running around with this in my sig because I'm too lazy/busy to make a new image. XD