I gave my blogs a few tweaks this evening. Responding to an almost universal dislike of the size of my friendfeed widget, I reduced it. I also reduced the width of the side column and two sub-columns. Then I added back the square ad in the top right. I think that is the only ad I will have on my new blog, at least until somebody tries to get me to sell out.
The other thing I added is a "post to del.icio.us" button to the bottom of posts. bloggerbuster had some good example code that showed how to do this. I seem to get a number of good tips from that site.
I also just found Steegle, who seems to know a bit more than I do about using Google Sites. I have not had time to explore the site much, but it seems like a good resource. Especially now that I think I am finally done with blog tweaks and ready to focus on my site.