At my request Qiaochu kindly merged my two accounts here a few days ago ("elgeorges" and "user 3247") .
As a completely unexpected result, I got a reputation bonus on another stackexchange site , English Language & Usage.
What baffles me is that on the other site I am registered under my real name and I found a message there to the effect that the bonus had been attributed automatically because I was a user here on math.stackexchange.
How did they know that I was "elgeorges"? Since that pseudonym is a transparent shortening of my name, this "translation" would be trivial for a human but the automatically of the welcome message on the other site baffles me. Since Qiaochu informs me that he is not the source of the translation, could someone please explain what happened?
[Needless to say I am not complaining about this completely undeserved bonus: it seems that injustice in our favour is taken with much equanimity]