A familiar question today is which version of Joomla should I move to...
Tagging, Tagging, Tagging...this means that you can have articles 'link' to multiple 'tag' areas at the same time. This can create an effect of having an article exist in multiple categories.
The back end of 3.1 is completely workable on a small mobile device. Just the other day, I was able to successfully change administrator settings while in the car on an samsung galaxy, which is unheard of in older versions of joomla
Yes, you have some getting used to in the 3.1 interface, but I feel it is faster to work with, and the displays are faster as well
When selecting compontents for your website, it is also a good idea to stick with tools that work for Joomal 3.x, if they do, it means the developer is 'seriously updating their tools', and old 'bad code', just won't work on the newer versions of joomla.
What about 3.5??? From what I have heard the next 'long term release' will be out in the Fall of 2014, so you have some time, no matter what release you choose.
In the last class that I taught in NYC, the students requested that I create a 'best of' of a 'must have tool list' for joomla! So I figured, why not.
Some things to think about...
In 2012 I created the course, 'Adding Dynamic Functionality to Joomla', with Video2Brain...the course has been converted over to Lynda.com, to purchase this course, click here...
One of the advantages of working with a content management system such as Joomla! is how easy it is to change information on your website.