MFA, Made for Adsense

Everyone has seen them and the majority of people despise them, they are MFA's, Made for Adsense Sites. They are creeping up a lot more fequently now and some are actually starting to gain grounds in the SERPs(Search Engine Results Page). How do the MFA sites compare to the MFAP sites?MFAP, Made For Affiliate Program sites. It would seem to me that sites created to market(affiliate) products