At first i have to say that this tagging component is the best for joomla in the whole wide world (but i have also to say there are only a few tagging components for joomla out there).

But there are two points i have to mention

1) If you are using another components like IDoBlog, MyBlog, etc.. which are using there own ajax scripts you will run into big problems, because there will be conflicts between the ajax scripts of Joomla-Tags and the ajax scripts of the other component (f.e. IDoBlog, MyBlog, etc..).

2) You should have skills in CSS to integrate the Component visually into your joomla site.

If you don't run an blog component or other component which uses ajax scripts and if you have little CSS skills the i can highly recommend Joomla-Tags!