I use a program called WordPress, which is also free. You can see the results on my website. I like it becuase it can be totally integrated into the look and feel of my site.
THe interface is easy to use, and my favorite feature is the "future dating" of entries, so if I get a rush of inspiration I can write a few entries and then space them out so it looks like I publish something every day or so...
Their website is
www.wordpress.com and if you're not familiar with website programming and integration, you may need a programmer, but I think it's worth it.