... and, from the point-of-view of PM as an information resource – as “the Go-To Site” for Perl on the Internet (which I consider that it largely is) – then CSS niceities really do not matter much. Sometimes, a very simple markup really is the best. I would much rather see improvements in the classification/points system, tagging or other means of adding taxonomy, and so-forth, because IMHO those would significantly improve the value of PM as an information resource.
Some of the visual aspects of the site are klunky ... some are downright strange. But people do not come to PM for how it looks.