Block / Hide "Sponsored" posts on Facebook
This script blocks ads on Facebook that use the word "Sponsored" or contains those letters in that order with other characters from "Sponsored" thrown in between.
As of the time posting it works great on the English version of Facebook.
This script works differently than other sponsored-post blockers in that it does not try to match a list of possible patterns. In addition, posts that have been scanned and are not ads are marked with a special variable. The above improvements make the performance impact of this script minimal (around 4ms with 100 posts on page).
Due to Facebook's ever-changing ad-obfusciation techniques, this script may periodically fail to block sponsored posts. To determine the cause of the error, add "abDbg=true" as a URL parameter. Normal posts will then be colored green and sponsored posts red. If a post is not colored, the checkAds() function is missing some posts. If a sponsored post is green, the isAd() function is at fault.
