Nuffnang started serving CPC ads for over two months now. There are mixed reactions over this move. Some complaint that it caused their earnings to drop significantly, while a small percentage approved the move. I was one of those who thought it worked quite well for bloggers with lower daily visitors.
Previously, bloggers are required to have at least 20 unique visitors a day to qualify for their ad programs. After gathering their publisher’s feedback, Nuffnang has decided to abolish their minimum traffic requirement. They conducted a study on the feedback and noticed that bloggers with very little visitors a day benefited more from the CPC ads while those with more suffered.
Based on the study, they tweaked the system to only display CPC network-wide campaigns to publishers who has less than 20 visitors a day. Meanwhile, the Cost Per Unique Visitors campaign will be served to publishers with more than 20 visitors a day.