I have tried to use GAB on multiple occasions.
I have never been able to figure out what I am supposed to do or why I would want to do it.
Admittedly there is a small learning curve on navigating the site but it most is in the long run well worth the effort. Hang in there and before long you'll be cruising and navigating like a pro. It took me a short while and initially I was as confused as anyone else but now it's like I was born there. Working on my second year now.