netmeg - 4:26 pm on Jul 20, 2011 (gmt 0)
I used to do it. I don't get certified anymore, because Google provides me no real incentive to do so. It's still fairly easy to game and when it comes down to it, it's a piece of paper.
You know how you get ppc work? Participate in forums like this (and elsewhere) and provide solid, authoritative help and answers for people who ask. Not specific, of course, just general. Don't troll for business, because if you know what you're doing and you're willing to help people, you'll be beating them off with sticks.
(That's just my take; others have differing opinions of course)