You could make your life a bit simpler than constructing the post data yourself, using HTTP::Request::Common: 
return POST("http://www.BrilliantPeople.com/jobsearch.asp", [
    undef,
    # Search for Information Technologies stuff.
    hdnOccupationSelectionCodes => join(",",5118..5137),
    txtKeywords => 'programmer',
    # numberperpage => 100,
    # currentpage => $page,
]);

[download]
But that's just a sidenote. What I wanted to ask is did they change their site in the space of half a day? I can't find any form with a "hdnOccupationSelectionCodes" parameter there.

Makeshifts last the longest.

In reply to Re: Mimicing browser with LWP by Aristotle
in thread Mimicing browser with LWP by Anonymous Monk

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.