Recently Posted needs to be expanded because at any given time there could be 20-100 new posts uploaded in a matter of minutes. 10 slots just doesn't seem like enough.
High Score Today should be somewhere other than the bottom of the page. This is the crème de la crème of what the site has to offer.
Does Recently Commented need to be on the Home page? Users already get notifications about comments to posts they're subscribed to, so it seems a bit redundant.
Perhaps we could replace Recently Commented with a "Random" section. It could refresh each time the user visits the page.