Pew Internet recently published a brief but interesting report on blogging.

The State of Blogging
"By the end of 2004 blogs had established themselves as a key part of online culture. Two surveys by the Pew Internet & American Life Project in November established new contours for the blogosphere:
- 8 million American adults say they have created blogs;
- blog readership jumped 58% in 2004 and now stands at 27% of internet users;
- 5% of internet users say they use RSS aggregators or XML readers to get the news and other information delivered from blogs and content-rich Web sites as it is posted online;
- and 12% of internet users have posted comments or other material on blogs.
- Still, 62% of internet users do not know what a blog is."

Read the full report here.