The Long Awaited Joomla 3.1 Update with Tags Now Out!
It's been much anticipated, and talked about heavily. Joomla 3.1 Stable has just been released just moments ago! With the introduction of "Tagging", you can now group articles and blog posts, and in turn, append to menu items. It creates a really good way to organize your content while maintaining your existing category and article structure.
The tags are built in to major core components and the tags are shared between extensions that impliment tagging. Also, it's worth noting that Tags can be nested!