Other than love for Perl and programming and to share and increase knowledge there is no other materialistic gains expected by any one - not even the maintainers.

It is indeed nice to have a site uncluttered by Java book ads and pink slices of dating site meat. That said, there is nothing wrong with materialistic gains. Many, most?, monks make money with Perl. Food and rent/mortgage are awfully materialistic concerns. Job related questions, when placed respectfully and meaningfully, are answered just as readily as golf and interesting algorithm ones.

Knowledge is a form of wealth that grows more when invested than it does kept under the mattress. As someone in here recently said, you sometimes learn more from answering questions than from asking them.