Hmm. So far I have mostly done all of my 'blog-like duties' by hand. Editing a text file with BBEdit that I publish (via BBedit's ftp-publish feature) to my website. Unfortunately, that means I do all the formatting and dates and such by hand. It's a little tedious, and therefore I don't update sometimes because of the tediousness.
I tried an application called iBlog for a lttle while. Fairly cool, but the format was a little too limited for me. I do recommend it to other OS X/.Mac users though. It's worth looking at.
For me, though, the search continues. I think a Perl solution may be in order.