I cannot rate the actual plug-in because no demo was available AND after I installed it, there was no documentation. The "support" link is dead. No sign or links for help on the developer's site. Very poor marketing!

...it doesn't work. Maybe my joomla version, but I get the error: "JDispatcher::register: Event handler not recognized."
On their site more people are feeding back the same errors, but the makers of this plug-in are not responding and their support site is down: support.blogiwiki.com
Pity, I think I would have liked this one, but it seems a dead end...