MJ
I'm more white hat than one can imagine. One doesn't sit at the top of google for years with the same keywords by doing black hat.
I should be insulted but since I don't know the person insinuating such BS I'll be kind
Its a very simple concept that does not involve cheating.
A client wants guaranteed results.
Design Develop Host &
SEO a website for the client with their products. Shopping cart and payment processing is tied into their to their merchant account through your contol.
Client pays a monthly fee for the entire package.
If client refuses to pay the monthly rental fee direct payment processing to your merchant account and enjoy life.
Document the whole thing with a contract.
Peace!
Oh and look, no blackhat needed...