Judging from this demo video on the blogging features of iWeb 08:
Apple - iLife - Tutorials
The archive page for blog entries it creates is still a total dump of all blog posts. *sigh* That was the #1 thing I wanted changed! It absolutely kills browsability and ease of use when you've done a half year of blogging let's say.
I hope it's just the video not mentioning that they've added pagination or calendaring, but if not, then I'll keep on avoiding iWeb.