Tracey Rotton makes a good case for WordPress certifications. It’s a great conversation to have. I just a) don’t think Automattic or the foundation are really good options to run such a thing, and b) think that running an official certification would be really really hard, and have potentially lots of negative consequences. Like I told Tracy, I may have a follow-up on this, but not yet. It needs more time to flesh out a solid reasoning.