So either they don’t care, or they aren’t aware. Maybe the business model isn’t what we think.
My take is this–Customer in the US has a website/product. Would like their website/product ranked high in Google and other search engines. Customer pays a US company who promises that they can guarantee to raise your search engine ranking. How? Pay spammer in Bangladesh/India etc. $1US/ day to post links to as many message boards as possible. I doubt they monitor or pay by the click.