The New York Times > Magazine > Phenomenon: Your Blog or Mine?: "As Web logs proliferate -- Technorati, which tracks 5 million blogs, estimates that 15,000 are added each day -- the boundaries between public and private are being transformed. Unconstrained by journalistic conventions, bloggers are blurring the lines between public events and ordinary social interactions and changing the way we date, work, teach and live. And as blogs continue to proliferate, citizens will have to develop new understandings about what parts of our lives are on and off the record."
Some scary etiquette and judgement issues.