Department of How the world has changed via blogging

I posted a couple of days ago about going over to my friend’s house and making dinner for her and her family so she could have a break (her father is dying). So, last night, as we’re all clicking away on our computers, my son says, “Mom, come see this.
This is a blog by my friend’s son, a high-school senior, who has a blog and who has posted: This is why Susan Mernit rocks hardcore (she is Zach Jarrett’s mom and i’ve known her for many many years):
Because she knows about my dying grandfather and because she is really sympathetic, she brought over food and made us a nice dinner tonight. Susan, you are awesome.

Now this made me feel really great, of course, but I also thought it was amazing that Matt has a blog.
And not only does Matt have a blog, but all l his friends at Columbia High School have blogs (I would give you the links, but they’re pretty, well, high-schoolish, for the most part).
Then, last night I had dinner in Manhattan–Mesa Grill–with a friend. She said, “I like to read your blog to see what you’re up to and what you’re thinking.”
So on one hand, this means that we can all read posts by one another obsessing about tests, and calories, and presents for relatives–things it might be better not to share–but on the other hand, we have this really cool, somewhat personalized, external communications tool.
Is this any different that the oersonal home page fad of a few years ago?
What do you think blogs are best used for? What kinds of blogs do you read?
If you feel like using this new comments feature I put in to add your 2 cents, please do so.