For the time being I’m only stealing links from Jeff.
He helpfully points out some recent work showing that most so-called “valid XHTML” really is no such thing.
These sources have more on why:
One big reason: there’s no good way to serve XHTML to all browsers with a valid MIME type. And that apparently matters.
(If this post means absolutely nothing to you, then congratulations, it means you have a life and don’t have to worry about this kind of stuff. Say hi to the world for me.)
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