This little text field can contain a lot of text. Enough for blog entries. So it might be an interesting idea to publish a blog directly on this page.
It might not be a good idea for the community though. If the blog is any good - you will get some regular readers. They may vote up your entries - which will pollute the front page.
If I had anything to say I would probably do it myself - just because it's possible. But I guess I am just to lazy and elliptical.
I wouldn't recommend using toplevel submissions as blog entries, because it would amount to self-submitting every post to news.yc. But if people wanted to use news.yc as a blog platform, I'd be open to it. It would only take about 10 lines of code. Does anyone?