I don't normally like to rant against the mainstream media, but their coverage of this Pew survey of bloggers borders on the bizarre.

The survey found that the overwhelming majority of people who blog do so for non-political reasons -- they function primarily as online personal diaries.

This would certainly be earth-shattering news -- if it was four years ago. Consider this Perseus report from the Paleolithic era of blogging -- October 2003:

When you say "blog" most people think of the most popular weblogs, which are often updated multiple times a day and which by definition have tens of thousands of daily readers. These make up the tip of a very deep iceberg: prominently visible, but not characteristic of the iceberg as a whole.

What is below the water line are the literally millions of blogs that are rarely pointed to by others, since they are only of interest to the family, friends, fellow students and co-workers of their teenage and 20-something bloggers. Think of them as blogs for nanoaudiences....

Blogging is many things, yet the typical blog is written by a teenage girl who uses it twice a month to update her friends and classmates on happenings in her life. It will be written very informally (often in "unicase": long stretches of lowercase with ALL CAPS used for emphasis) with slang spellings, yet will not be as informal as instant messaging conversations (which are riddled with typos and abbreviations). Underneath the iceberg, blogging is a social phenomenon: persistent messaging for young adults.

Nevertheless, media outlets have framed the story in interesting ways. Consider the BBC:

Bloggers who say their writings are a form of journalism are in the minority, despite the hype, two surveys reveal.

A study by social networking site MSN Spaces found that nearly 60% of people in the UK use blogs as an online diary.

"Citizen journalists" are increasingly dominating the headlines for reporting events using online tools like blogs.

A second survey by the Pew Internet and American Life Project found that 65% of people in the US who write a blog also do not consider their work journalism.

The majority of bloggers prefer to write about themselves and share their digital creations than to discuss politics or technology, a survey released Wednesday showed.

While high-traffic "A-list" bloggers who discuss topics covered by traditional media get most of the publicity, the fact is blogging in general is more of a personal experience, the Pew Internet & American Life Project said. More than three fourths of bloggers surveyed said they blog to document their own experiences and share them with others. More than six in 10 said they blog to share practical knowledge or skills with others.

"Blogs are as individual as the people who keep them, but this survey shows that most bloggers are primarily interested in creative, personal expression," Amanda Lenhart, senior research specialist at Pew, said in a statement.

The media tends to focus on a small subset of well-known "A-list" sites that receive a high volume of visitors. These blogs tend to focus on politics or other hot button topics such as technology. For these bloggers, a blog is more than just a hobby, it is a job.

However, according to the survey, the majority of bloggers, 76 percent, said the reason they have a blog is to record their personal experiences and share them with others, and 64 percent reported that they wanted to share their knowledge and skills with others.

Most bloggers said the write about a myriad of different topics, but about 37 percent focus on "my life and experiences", with only 11 percent of bloggers said they concentrate on politics and the government, and 4 percent blog about technology. A scant 7 percent of respondents focus on entertainment and 6 percent use their blog to discuss sports. And, just 34 percent of bloggers look at blogging as a form of journalism.

Pew's blogging masses couldn't be more different than the American A-listers. Most A-listers are men over 30; have published before; are in it primarily to change public opinions and not to share their experiences; know only a fraction of their readers; and don't conceal their identities....

I'm not disparaging bloggers, so please don't treat me to a high-tech lynching. But this study shows that at this early point in the blog era, the great mass of bloggers aren't set on replacing reporters. The top 100 or top 1,000 may consider themselves "citizen journalists" of one sort or another, but the survey finds that 65 percent of bloggers don't consider their output journalism at all. They're just expressing themselves in a leisurely fashion, inspired by a personal experience (78 percent, says the survey), and their blogs are a "hobby" or "something I do, but not something I spend a lot of time on" (84 percent).

Again, I'm not disparaging hobbies or navel-gazing: I have hobbies I can bore you with, and I navel-gaze. But the Pew report indicates that only a tiny fraction of current bloggers have any ambition to fulfill the blogs über alles designs some media theorists plotted for them.

Now, I am resolutely not a blog triumphalist, and do not think that blogs will supplant mainstream media outlets. However, in the spirit of contrarianism, let me offer two cautionary warnings to the journalists out there who might be reassured by these numbers.

First, it doesn't matter if an overwhelming majority of blogs do not focus on politics and government -- what matters is that there are a huge number of blogs out there and a fraction of them do focus on matters of interest to political journalists. If the Pew survey is accurate, then eleven percent of twelve million bloggers -- more than 1.3 million Americans -- have blogs that focus on the politics. Most of them probably aren't that good -- but I could say the same of many newspapers as well. The point is, 1.3 million is still a pretty large number.

Second, as an A-list [No--ed.] B-list [No-ed.] C-list [In the interest of not embarrassing you further, I'l let it pass--ed.], it's worth remembering that what motivates bloggers changes over time. Most A-list bloggers, when they started their blogs, were also "primarily interested in creative, personal expression." The motivations can change once an audience starts to grow, however.

I eagerly await the Pew survey on commenters.