I'm working with Jadu 1.12 and purposing it into an intranet to replace our campus portal.
Working with Galaxy sites? If so you may or may not know this little gotchya having to do with the Navigation widget. Read this if you want to know I was able to get it to render for me.
Creating widgets is probably the best feature of Jadu. Depending on your programming expertise, you can create some pretty incredible functionality for your site. A perfect example of this is this page on our site - http://www.messiah.edu/offices. This entire page is 1 widget I built that interfaces with the Jadu Directories. Below are two links to the same directory and what it would look like if we had used the default / out of the box (OOTB) view(s) :
I've had much success creating community sites in the past. There always seems to be the need for one when I get involved with a product, and I have an inherent need to help people, fix what's wrong and fill the gap. Most recently the Luminis Developer's Network (LumDev) - was built around a community of developers at colleges and universities using a portal product called Luminis. That site was hugely successful because of the developers, and because of how extensible the product is.