Thinking about launching your own blog? Here's some friendly advice: Don't. And if you've already got one, pull the plug.

Writing a weblog today isn't the bright idea it was four years ago. The blogosphere, once a freshwater oasis of folksy self-expression and clever thought, has been flooded by a tsunami of paid bilge. Cut-rate journalists and underground marketing campaigns now drown out the authentic voices of amateur wordsmiths. It's almost impossible to get noticed, except by hecklers. And why bother? The time it takes to craft sharp, witty blog prose is better spent expressing yourself on Flickr, Facebook, or Twitter.

If you quit now, you're in good company. Notorious chatterbox Jason Calacanis made millions from his Weblogs network. But he flat-out retired his own blog in July. "Blogging is simply too big, too impersonal, and lacks the intimacy that drew me to it," he wrote in his final post.

Impersonal is correct: Scroll down Technorati's list of the top 100 blogs and you'll find personal sites have been shoved aside by professional ones. Most are essentially online magazines: The Huffington Post. Engadget. TreeHugger. A stand-alone commentator can't keep up with a team of pro writers cranking out up to 30 posts a day.