A few companies cashing in on the blogosphere

As a few star bloggers have made six-figure salaries or million-dollar deals, more and more people have been tantalized by the prospect of making money online -- even though the vast majority of blogs are little more than online diaries.

"A lot of the blogosphere does not make sense if viewed from the point of view of a business model," said David Weinberger, a fellow at the Berkman Center for Internet and Society at Harvard Law School. "Blogs remain, I believe, primarily conversational."

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