My site can now handle Markdown. This is a big deal for me. I don't really want to rebuild a blog tool, complete with a rich text editor and all the features we can get for free on tools that already exist. I find that Markdown is incredibly useful for reasons that will be obvious to tech-savvy readers.
For the readers who are unfamiliar with markdown, it is a basic set of rules you can use that make text render in simply decorated ways, for example, bold, emphasis, links, and things like bullet lists, checklists, etc...
This means my blog posts can now include links. This was an easy addition to the site, I just needed to build a custom template tag that Django uses to render data it found in the db in a way that resolves markdown syntax on the server, instead of showing the user that syntax on your client.