A friend of mine is launching an ebook and I was wondering...Has anyone had success at doing SEO marketing specifically for an ebook? If so, are there avenues and any techniques you want to share that have worked? I'm not talking about general SEO, but the ebook niche.
I'd say it's pretty much the same for any industry; optimize the site for its target key phrases and associate it with the ebook's niche via inbound text links from related, topic-specific sites. There is also the factor of time, for both the origin inbound link and the referring domain; the older the better.
Using clickbank (as a card processor) has zero influence on SEO. Your advice is more than misleading; it's irresponsible.