I use Jekyll, but I don't use Disqus. What really motivated my switch to Jekyll however was not some abstract notion of "good code." I've looked around the WordPress internals, and yes, it's not exactly a vision of loveliness, but it's readable and the whole package has fantastic documentation.<p>What motivated my choice was security. My blog is very low-traffic, I post to it only a handful of times every year. It is not worth my time to worry about keeping WordPress updated and pruning spam from a comment list that ends up being 98% spam. Jekyll solves this so long as I'm willing to give up comments. Fair trade. If I want comments, the only way to get similar peace of mind is farming out comments to a third-party service which I do not control. (Because I do not want it to be something I have to maintain on a weekly basis.)