Rated XHTML
http://www.alistapart.com/stories/xhtml/

Koch, Peter-Paul
List Apart, A
2000

Abstract:

The W3C’s XHTML language is intended to bridge the web’s past (HTML) and future (XML). Shall we cross this bridge, now that we’ve come to it? Or is XHTML more trouble than it’s worth? Peter-Paul Koch puts forth the pros and cons.