Apart from being semantic nonsense, it requires unnecessarily bloated CSS to style the lists.

It requires three lines which are as follows:

ul {
margin: 0; padding: 0;
list-style-type: none;
}

After that, everything else is styled as would normally be done.

Please explain how or give me an example of why it is nonsense?

I think it doesn't make a difference when compared to div's. If he wants to make his point, a good test would be to recreate a 'css zen garden' page. I'm sure it's possible and it would help him explain his point. Then it would be possible to compare them and test the differences (div vs. ul/li).

My understanding is that CSS Zen Garden themes are about the smart use of CSS, and not about HTML. This concept is about HTML and not CSS. I don't see how coding a CSS Zen Garden theme will prove anything. We believe that the Golden Age theme and its coding delivers our point across.

Please explain how coding a CSS Zen theme will prove our point?

in my opinion a lot of coders think of this of a great resource. If you can show you can achieve the same with your concept, you may get more recognition. You state that it is about html, and not css. without css, using ul/li doesn't make sense at all. (your last post shows css, not html)

Remember that lists are not block objects. They can't contain many tags, including img and p tags.

Lists are block-level objects, but they can only contain <li> elements; <li> elements are also block-level, and they can contain anything.

Sorry, I have that backwards. The p tag can't contain ul or ol.

I have put up a new site using this theme. It has been active since March 1 and has no backlinks or Pagerank. I have choose blog tips and ethical SEO for the main two keywords.
It is ranking #233 for "blog tips" and #50 for "ethical SEO" in Google. It is ranking #1 for spunky jones and spunkyjones in Google as well. about 1/2 of the articles are ranking on the first page of Google as well.

I am a designer and have some basic knowledge in HTML. My coder is the expert in the HTML department and when he approached me with this concept, I listened and decided to try it.

So far it seems to be working very well, and I am very pleased with the results so far. The test site is Spunky Jones Blog tips for Ethical Bloggers.

Yes, you are correct that if I can prove this concept more people will be have more interest to look at it.