Last month when I visited Tokyo, I was very flattered (and pleasantly surprised) when fellow Japanese hackers -- Miyagawa and Takesako in particular -- referred to me as "ōtori-tan", literally the "phoenix girl", where phoenix is my Chinese chosen name.
The fascinating thing is that this sounds almost exactly the same as the Japanese romanization of "Audrey Tang", my English chosen name. Miyagawa wondered if I knew about this strange coincidence -- I really did not. :-)
Wikipedia has some more information about the -tan suffix, as seen in e.g. the OS-tan phenomenon. After some ego-googling, it seems that this usage started from lolipop's blog, then subsequently propagated to Rocco's and other places. Lovely!