Hides Facebook ads (best-effort)
Tries as good as it can to hide Facebook ads, which is a lot harder than it sounds because Facebook is really unique in their anti-ad mechanisms*. As a result, this script is rather CPU-heavy, but it should do the job.
If an ad or two slip through or an innocent post gets blocked (which should theoretically not happen, but who knows) please let me know! This entire script could only be tested through a lot of trial-and-error due to Facebook's unique nature.
*Technical mumbo-jumbo: Facebook does some wonky stuff to stop ad-blockers (see attached picture).
