I go places all the time and Wifi is spotty so this app I like it has a data saver so it shows lower quality versions of photos when I browse FB but it does not do it to the point where the photo looks bad. And it's light on resources too and more responsive than the full version of the app. Sometimes all you need are the basics which this is what it's all about but you can still do live video if you find where to do it.
It's only quirks is that you need to learn and get used to the interface if you were used to the actual full FB app. But not too hard of a learning curve. I suppose Lite stands of light on features full on functionality. A must for any Fire tablet owner.