After noticing that I attract a fair amount of traffic from Google that tends to stick around for a little while, I thought it would be smart to install a “Related posts” plugin, to help people who wander on to the site do a little more reading. So yesterday we moved to WordPress 2.8, and I installed the plugin. Their new version caches relations, which the old version did not do. I had been thinking about installing this plugin for a while, but Bitter runs it on her food blog, and it’s very hard on MySQL without caching. Now that they’ve fixed the problem, I decided to give it a try.