Two of my colleagues worked on a creative idea to develop prologue – group twitter-like service, within a few days. Technically, it utilizes the underlying WordPress tables and existing logic and adds new presentation (or theme). The result is a very attractive new service! It is widely reported in the tech media.
This is an indication of the excellent versatility and extensibility of WordPress software. With a little ingenuity, you can manage ANY content using WordPress, and do amazing things with this free open source software.