Matt, here's a few things: - on page 4 you might mention that Google may change your title tag on the search results. - on page 8, you might mention case sensitive URLs (can cause dupe content if not used consistently) and the use of hyphens vs underscores in URLs. - on page 15, I would updated the heading "Create content primarily for your users, not search engines" so it takes out the word 'primarily'. - Page 18, would it be helpful for users to add location and tags, titles, in EXIF data in images? - Page 21, I would mention specifying xml sitemap location in robots.txt file.