A great new feature is coming with IBM Connections 5.5 >>
With this feature you can build your folder structure inside your personal and also inside the Communities files. Now you can use IBM Connections Files as replacement for your home folder on a file server ( as I do ). Of course you also could use tagging, but I always had to discuss this missing feature with some users at customers.
For integration in the Windows Explorer a new plugin is available on the Solutions Catalog. In this plugin the "nested folder structure" is included.
Of course there are a lot of additional features as you can see in the blog of Luis Benitez. There you also can take a look of the new functionalities of IBM Docs 2.0