If you're fond of a Perl module which you feel it is underappreciated, write a review about it and contribute to the 2006 Perl Advent Calendar. belg4mit, the guy in charge, will appreciate doing more editing work than writing entries, as diversity is a good thing and he may not take all Christmas gifts home with him.
The site is here: http://perladvent.pm.org/
You may read about the rationale here: http://perladvent.pm.org/FAQ.html
You may find out how to contribute here: http://perladvent.pm.org/FAQ-submit.html
So just do it! As if it wasn't enough the happiness to spread the word about your favorite and little known module, this year O'Reilly will donate books to the authors of published entries.
Update. I've got the URLs right after belg4mit's reply.