Methinks this might be a slight over-reaction (Update:
or might have been, based on your original text), given that BUU
did post his original solution to the problem. He may well have intended to go to the interview, describe his code, and then say "here are some alternatives that I solicited on Perl Monks", which is a valid thing to do when trying to solve a job-related Perl problem. One could say that he is showing initiative. Sure, it would have been polite to point this out in the OP. Maybe I'm too forgiving, but I always try to see the positive side.