Three Four pieces of advice:

1. Use an RDBMS.
   • MySQL
   • PostgreSQL
2. Use Templates.
   • Template Toolkit
   • HTML::Template
   • HTML::Mason
   • Many, many more...
3. Use an application framework.
   • CGI::Application
4. Use mod_perl (thanks fuzzyping)

Those who know that they are profound strive for clarity. Those who
would like to seem profound to the crowd strive for obscurity.
            --Friedrich Nietzsche