Blessed or not, liked by companies or tossed into the wind, the problem I have with Perl certifications is that most of them you have to pay for. In a community where the language is free, I can't see paying $20 usd to take a Brainbench (or the like) test that expires after a year and has no real world application. It's a waste of time and money. If the company knows so little of Perl that they rely on a third party certification, you should be able to get the job without a 10 cent certificate I can make with an equally expensive program. Language certifications mean nothing in the long run.
If a company really wants to see what an asset to the company you can be, they will devise their own test that more closely shows what you can offer them.