Info for programmers about character sets

I had been thinking about writing a nice introductory article for programmers about the history of character sets and unicode but Joel, of Joel On Software, has done the dirty work for me in his latest article The Absolute Minimum Every Software Developer Absolutely, Positively Must Know About Unicode and Character Sets (No Excuses!). A site I work on is currently available in more than 12 languages with some more coming up soon. We'll soon support Georgian, which leaves the two bytes per character realm of unicode and jumps to four bytes per character. The article covers well much of what I've learned in the past two years about getting characters to look correctly in web browsers.