/u/hopesthoughts on When has google started showing irrelevant results on top than what you are looking for?
Not only paid ads, but then there are people trying to get page rank up high to get in the first page or 2. Yeah Google tries to get rid of those when they find them, but how often do they do an update to cut those results out? That and paid ads are why the results are full of spam.
from overview for hopesthoughts https://ift.tt/38F2gGB