steveb - 7:05 am on Mar 28, 2008 (gmt 0)
There isn't anything about optimization in this issue. It's just a matter of the percentage of non-duplicate text in the html. Title and description and alt text alone isn't enough. If you have a /george-bush/ photo section, the top page will get indexed, but the likelihood is many pages in the section will not unless they have a few paragraphs of genuine, relevant text.