I think moving some of the information from the about page to the main page would be a good idea. I suspect that new people coming here will want to read the "famous" posts first. Recommending Eliezer's book would also be a good idea.

LW is a convenient way to follow a lot of people, since you only need to go to one site, or follow one RSS feed. Since those people don't post here directly anymore, is it possible to make LW automatically cross-post? This is common in the open source world with the "planets", like Planet GNOME. I assume we'd want a way to still directly post to LW, and probably a way to filter by tag (for example, only posts tagged "lesswrong" go to LW).