LinkWithin is the newest contender in this market. The plugin looks at tags, but it also analyzes other factors like relevancy, popularity, and recency. Unlike similar plugins, however, LinkWithin doesn't just display a list of headlines underneath each post, but also a thumbnail with a picture from each post, which makes it far more attractive than most of its competitors.Most blogging platforms now feature a number of third-party plugins that can display a list of related stories on your blog, or even on other blogs on the Internet. Typically, these plugins will look at how a story was tagged and then display a short list of similar stories that use the same keywords.
The plugin is available for Wordpress, Typepad, and Blogger, though LinkWithin will also provide you with a code snippet that you can use on other blogging platforms. We assume that LinkWithin does some semantic analysis in the background in order to arrive at its list of related stories, though we weren't able to track down any details.
In testing LinkWithin on our own WordPress blog, the suggested posts were always spot-on, but obviously, your mileage may vary.
A Few Caveats
Because LinkWithin does most of the computing on its own servers, it can take a little while before its results appear on your blog (usually around one hour). The plugin also doesn't play nice with every theme, though the team promises to fix any problem you might encounter within a few hours after you contact them.
LinkWithin is still a bit rough around the edges. It would be great, for example, if you could actually customize how the related items are displayed on your blog. For now, you are restricted to showing three related stories, for example, and the related stories will appear on both your homepage and on individual posts.
If you are looking for a different way to showcase more of your blogposts on your blog, however, LinkWithin is definitely worth a try.
Thanks to Marjolein Hoekstra (@cleverclogs) for telling us about this new service.