Today I added support for tag pages in my blog system lazyblorg.
From now on, you can click on any usertag beneath a heading. It opens a page which has optional content about the tag (why I am using it and how) and a list of all pages using this tag.
With this feature, you are able to browse through the blog by keywords.
Still missing for now is the support for tag pages of auto-tags such as the language of the article. I have to come up with a decent concept for this as well in the future.