From series Joomla! 3.x, Joomla supported many new features compared to previous releases. Joomla! 3.0 - the one which we has developed many themes for it: SJ Health, SJ Company... - integrated Bootstrap for templating and coding improvement. It has one new admin theme - quite cool for you - as well. And many other... But just til Joomla! 3.1, a completely new feature has been introduced: TAG feature. Read more to know about it.
Joomla! 3.1 compared to Joomla! 3.0
Several important features has been revised:
- Pagination for search page
- Show log for debug
- Remove GeShi plugin (a syntac highlighter, not a must-have, of course)
....
- and Tag feature
Tag - new cool feature
From version 3.1 on, TAG is one of the official feature for Joomla! CMS. This helps us optimize Web pages with keywords and certainly, better for SEO. Generally, this will be quite same as tag of K2 component if you are using, however, this will be Joomla! native.
More about it here
N.B. AS common thought, later is better, but this is beta version only, using it is NOT for production sites!
Thank you for reading this.
Source: SmartAddons.com