Does what it says on the box
Work like the description says! Wonderful!
This script did the job, the ads and suggestions are indeed hidden, yet my cpu went from almost 0% to 50% percent usage.
When turning off this script and reload the facebook it went down again to almost 0%.
I got no other scripts running and only had one webpage open being facebook.com.
So it definitely seems to be the script which keeps using 50% cpu usage.
Sorry for this review, but this is what I experienced.