This brings up the question of who certifies the certifiers. In some fields, this question has a widely-known answer. Do any widely-recognized meta-certifiers evaluate Perl certificates?

I have interviewed more than a few Perl programmers, and it was not difficult to assess Perl skill.

If a candidate were to list a certificate on a resume, my expectations would rise, and I would expect good answers. The certification would show confidence in Perl, so I would feel free to ask more difficult questions.