koan - 9:22 am on Feb 8, 2011 (gmt 0)
It begs the question, if the user finds what they want does it matter how they get there?
In the case of a MFA site, it just served as an middle man without adding value while the user could have clicked the same ad on Google Search results, providing them with greater profit, so MFA sites are just parasitic. I'm sure Google would much prefer that a user click on the ads directly if that's all they wanted, or get to a quality site with more information if that's what they're looking for. MFA sites also tarnish the Google and Adsense brand for the general public, associating them to frustrating and trashy sites of little value.