Log analysis: the 6 decisive SEO criteria
A study of 7 million Googlebot hits on 12 websites: how word count, load time, depth, internal links, backlinks and rankings influence crawling.
Category Technical SEO
Crawling, indexing, logs, redirects, architecture: the technical side of SEO, at the scale of a network of 300 websites. Field notes with figures, and the pitfalls I met along the way.