Made For AdSense
Made for AdSense [MFA] websites are typically made by web scraping content from other websites and then monetizing the site using Google AdSense. This is also a derogatory term used to refer to websites that have no redeeming value except to get web visitors to the web site for the sole purpose of clicking on Google AdSense advertisements.
The problem with Made for AdSense sites is they are considered sites that are spamming the search engines and diluting the search results by providing surfers with less than satisfactory search results. The scraped content is considered redunandant to that which would be shown by the search engine under normal circumstances had no MFA site been found in the listings.
These types of sites are being eliminated in various search engines and currently show up as supplemental results instead of being displayed in the initial search results.