Sometimes you need to see what’s wrong with a WordPress install, and you need to see it fast. I’ve had a set of hacks around for a while to do that, but finally started combining it into a WordPress Debug Theme. This theme is quite simple for now, as it only does a few things, but does them quite effectively.
Visualizes for you all kinds of important data about the page you are looking at. All kinds of fun for us WordPress nerds.
Like the blog? You're gonna love our book. Over 400 full-color pages of hardcore WordPress action.
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Jeff Starr 
has been
designing & developing WordPress-powered sites since 2005. He develops WordPress plugins, creates
WordPress themes, and writes lots of articles about WordPress, web security, and designing with Web Standards.
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Chris Coyier 
is a real-world web
designer who has been reaching for WordPress to power client sites for many years. He subscribes to the theory that
not only is WordPress capable of powering any website it is almost always the right choice.
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