As a web developer with zero formal training, my resume relies entirely on the "experience" portion. But I'd like to get some accreditation in the languages and skills I'm good at. And more than that, I want some feedback to know that I'm actually learning these things properly.
So, what are good certifications for your standard web developer/designer's skill set? (XHTML, CSS, AJAX, PHP, MySQL, Rails, Apache, SEO, Google Analytics/AdSense, Photoshop, etc)
And more importantly, will the value they add to my career/knowledge/ego outweigh the cost of taking the exam? For instance, I know Zend certification can be around $500 to take the exam, but will it be worth it in the long run?