The manual is a couple of year's old now, but he gives updates in a regular ezine for buyers. And gives a lot of material I haven't seen elsewhere too.
Given that the search engine world is constantly evolving, some of the information is going to be out of date. But like me, he's an advocate of using time-honored methods that don't date fast, so it's still good value.
Hope that helps.
Work on your business instead of your website!
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