This component integrates smoothly with Joomla, but it fails when it comes to CB integration. So far there aren't any forum components that integrate with CB (Community builder) especially if you want to add a forum tab in CB profiles. Hopefully someone will step up to the plate and make a plugin for Ninja so that it will also integrate with Community Builder.

I cannot give this a good rating as it did not work for me even after attempting to test it. The user manual is sparse, but it's a component in need of work. It took me a week to get the component after some errors made on the part of the developer. After that time, attempts to get the component to work with paypal's IPN failed. At first I thought it was something on my end, but after contacting paypal they showed me that it was not related to the information I had input.