There are a lot of modules available on DotNest, but not that many themes to style your sites. You asked for more, and we listened: the Basic Blog Theme by Márk Bartha is now available for all DotNest sites!
The theme is simple but good-looking, and is (surprise!) especially well suited for styling a blog.
Did you procrastinate on starting your own blog just because "nah man, DotNest still doesn't have a theme that I'd use on my blog"? You don't have to wait any more, add your blog for free!