It’s a cliche to say it, of course, but Aaron Wall really did write the book on search engine optimization. There are very few people around who know – or share – as much as he does on the subject.

Today he published an extraordinary article called How Much is a #1 Google Ranking Worth? and it’s one of the most thorough, well-researched and well-documented summaries of SEM and SEO I’ve ever seen. It’s going to take much more time than I have to spare currently to really go through it thoroughly, but I wanted to share it with you straight away. Some light reading for the weekend, perhaps?

Thanks Aaron … this really is a valuable article.