When I took Edward Tufte's graphics class one of the questions was about website design. He said the gold standard is the Google News website. Almost all signal and almost no noise. This design is not bad at all but it might work better as an "About" page than as the main page. The main page should be precisely what you were looking for when you entered whatever you put into the search engine when it referred you to the LessWrong main page.
The new front page is up.
Previous discussion here.