Dave Winer is taking a lot of heat for his comments on CSS: see here, here, here and here (for Dave's response, be sure to read the comments in that last link). In the
titleattribute of Anil's link, he makes the case that it is in Dave's business interest to use CSS: "if you comply with standards, *every* web page becomes an XML-based outline."
Recently Dave Winer has been wondering about the use of CSS. As noted above, MovableBlog points to several thoughtful responses. Bryan Bell explains the issue concerning IE 6 and Manila. Read his comments section for Dave Winer’s response.
I found Jeffrey Zeldman's response to be very thoughtful and educational.