As always the answer is "It depends".
in reply to Is PerlMonks relevant for one's Perl marketability?
If your prospective employer is specifically looking for a perl-programmer, you can but hope that he knows the Perl social environment of which Perlmonks is indeed an important part.
I always put a link to my homepage here in my on-line sites (and I am not even a professional programmer). Of course, if your would-be employer checks you out on Perlmonks and you have negative XP and all your posts are of a trollish nature or have been reaped by Him-who-should-not-be-named, it is not going to help you.
A program should be light and agile, its subroutines connected like a string of pearls. The spirit and intent of the program should be retained throughout. There should be neither too little or too much, neither needless loops nor useless variables, neither lack of structure nor overwhelming rigidity." - The Tao of Programming, 4.1 - Geoffrey James
My blog: Imperial Deltronics