Very useful, but it is not obvious how to use it. I only managed to make it work on Facebook classic and was not able to use it on the new version of FB.
Luckily I searched and found the thread with their original topic, and the updated app, today when they uploaded it. THANK YOU, it took me a few seconds to clear all the different "visible" sections. After a page refresh, I was able to get them ALL as they moved up in the line of "visible" interests. Facebook has gotten sneaky since it went public.
