Overall, this extension is excellent.
Pros: Many! Fully loaded with everything you need to integrate social networking with your site.
Cons: The only thing I can say is there are so many options, it can be a bit overwhelming. But this only emphasizes how well conceived and complete this extension is.
Level of Difficulty: I would classify this as moderate. You should have some experience implementing Joomla! extensions. You also may need some experience working with style sheets, but only necessary to customize certain features.
This extension comes with several modules, many which the average user may not know the purposes. The initial setup includes a "wizard" style "Tune-up" that not only helps properly set up this extension, but ensures all necessary modules are active and error free.
Support for this extension includes documentation, well-explained and commented features, and a support forum. My experience with the forum is it is prompt, responsive, and extremely helpful and knowledgeable. It was not necessary for the installation, but I found it invaluable for solving some of my own issues specific to my site. I would say their support is excellent.
JFBConnect is perfect for implementing and integrating social networking with your authentication and site promotion. It is a must have for increasing site traffic.