This is a brand new thing for me. I’ve never released a free theme, so I expect that if it does gain a lot of exposure, this ride could possibly get bumpy.
This theme isn’t a very flexible one, but I still feel like it is interesting enough to add to your collection. It is called xSimplify because it does exemplify beautiful simplicity.
The sidebar is widgetized and it works in WordPress versions 2.0.*+ including the latest 2.5. It has a stylized rss section and search area in the sidebar. The pages are listed across the top as tabs. The background extends for a maximum of 1600 pixel wide resolution and features a nice vector art tree at the bottom that gives you a nice surprise when you scroll to the bottom of a long page. There is special styling for an unordered list and a blockquote. The comments are also styled with alternating shading.
<img alt="Creative Commons License" style="border-width:0" src="http://i.creativecommons.org/l/by-sa/3.0/us/80x15.png"/>
<span xmlns:dc="http://purl.org/dc/elements/1.1/" property="dc:title">xSimplify</span> by Tammy Hart is licensed under a Creative Commons Attribution-Share Alike 3.0 United States License.