easy to understand documentation, works with fireboard, pop-up notification, wow. this is by and far the easiest piece of joomla that i have installed since i started with joomla.
the only down side to this is if you want to use the Java popup window to notify users of a new message. every time you navigate to another page the pop up window shows up again. if there are more than 2 links to get to your inbox (PMS are accessed only through fireboard on my site) its a little bit of a pain. but all you have to do is use the xml floating notification that contains a link to the inbox right in the notification.
All in all this is an awesome piece of code~!!