The whole HTML validation exercise is questionable, but validating as XHTML is flat-out masochism. Only recommended for those that enjoy pain. Or programmers. I can’t always tell the difference.
American software developer, author, blogger, and entrepreneur. Known for the programming blog Coding Horror. Co-founder of the question-and-answer website Stack Overflow, with Joel Spolsky, and the Stack Exchange Network. In 2013, his new company announced its flagship product, Discourse.