Definition & Explanation

MFA (Made For Advertising) sites are websites designed purely to maximize ad impressions and revenue, often filled with low-quality, AI-generated, or clickbait content. These sites rely on traffic arbitrage — buying cheap traffic from paid sources and monetizing it through high ad density. Industry research estimates that MFA sites account for at least one in five online impressions and consume roughly 15% of global programmatic ad spend, making them a significant source of wasted budget for advertisers.