Bloggers are also less white than the US Internet population as a whole. While 74 percent of general ‘Net users are white, only 60 percent of bloggers are, meaning that blogs are helping to provide a creative outlet for a broad spectrum of Americans. And it is a creative outlet; few bloggers are interested in money or influence. In fact, more than half of all bloggers write using a pseudonym, and the same numbers say that they blog more for their own benefit than to be read by others.
Read this article from Ars Technica and a related one from the Washington Post. In related news, it seems the vast majority of bloggers blog just to “express themselves,” and not to provide an alternative news source to mainstream media.