Notes:

A blog focussing on using jQuery in an enterprise setting.

On the homepage each blog post is contained within an article, each with its own well thought-out header and footer. However all the posts are wrapped in a section where div would suit better. Another point would be that each post has an h2 for the main heading, then another h2 for the introduction. It would be better for the introduction heading to be an h3, then it would start an implicit sub-section within the article.