> Perhaps bingos will have an answer; although, I don't think he visits very often. I've encountered his name on many occasions in CPAN testers reports and the acknowledgements section of deltas...

I've toasted his name on many occasions, once even all night long:

... the pizza and beer helped a great deal, generously donated by adamk in response to Chris Williams, aka bingos, winning the "The Sydney.pm Less-Than-A-Metre-Of-Beer Challenge", where adamk clarified an important prize condition: "I will force Sydney.pm to toast your name for every beer they open, all night". I can confirm that adamk did indeed enforce this condition and that every single beer opened on the night was accompanied by a loud and raucous "Cheers, Chris Williams!", even a hip-hip-hooray at one point...

... so if he does visit us and provide an answer, I suggest we all open a beer, and loudly shout "Cheers, Chris Williams!" :)