Validating the code
I've started validating the HTML on the site using the W3C's syntax checker. There are hundreds of pages, so this will take weeks or months. It should make the site more accessible for those of you with stricter browsers such as Firefox. Look for the W3C logo on the bottom of the pages I've validated.
Today I finished validating the Airplane Hangar section, with its articles on thinking about buying an airplane, airplane buying requirements, searching for an airplane to buy, my 172, breaking in the airplane, ownership issues, ownership costs, high-wing vs. low-wing, car gas, and the airplane owner's log.