Affiliate schemes have been described as a good way to earn money without lifting a finger. Say you're a classic car enthusiast and create an interesting website about them: you'll attract like-minded visitors who might be interested in buying spare parts. You don't sell any spares, but can offer a link to a site that does. By signing up to that site's affiliate scheme, you'll receive a commission for the visitors sent from your site who buy spares.
Fortunately, bloggers under siege can use defences like Akismet or "captchas" that defeat spam software but don't stop humans leaving a real comment. The "nofollow" tag, supported by some blogging software, means search engines won't rank any link in a comment. Fine - except it doesn't get rid of the dozens, hundreds, thousands of comments that pour on to blogs.
While there's money in it for people, and no effective comeback from the companies that benefit, the moneymaking will go on and bloggers will curse those trying to make money from their goodwill. => full article
I curse every splogger, scraper, spammer and affiliate blogger that was spawned from the womb of greed with every spam I jettison.