Blogs do two things that Web magazines ... cannot. First off, blogs are personal. ... Readers increasingly doubt the authority of The Washington Post or National Review, despite their grand-sounding titles and large staffs. They know that behind the curtain are fallible writers and editors who are no more inherently trustworthy than a lone blogger who has earned a reader's respect.

The second thing blogs do is - to invoke Marx - seize the means of production. It's hard to underestimate what a huge deal this is. For as long as journalism has existed, writers of whatever kind have had one route to readers: They needed an editor and a publisher. Even in the most benign scenario, this process subtly distorts journalism. ... Blogging simply bypasses this ancient ritual.

Why not build an online presence with your daily musings and then sell your first book through print-on-demand technology direct from your Web site? Why should established writers go to newspapers and magazines to get an essay published, when they can simply write it themselves, convert it into a .pdf file, and charge a few bucks per download? Just as magazine and newspaper editors are slinking off into the sunset, so too might all the agents and editors and publishers in the book market.

This, at least, is the idea: a publishing revolution more profound than anything since the printing press. Blogger could be to words what Napster was to music - except this time, it'll really work. Check back in a couple of years to see whether this is yet another concept that online reality has had the temerity to destroy.