Pew study: Blogs busted out in 2004 Last year proved big for blogs and bloggers, according to data released from The Pew Internet   American Life Project. Blog readership jumped 58 percent between February and November, and comprised 32 million U.S. citizens in 2004. More than 8 million U.S. citizens have created a Web-based diary, and one in 10, or around 14 million U.S. Internet users, has contributed thoughts or comments to a blog.