The developers have really gone overboard and of you take notice a few of the regular posters here have a habit of talking DOWN to posters not discussing their concerns.
I did NOT give previous permission to these add-ons, and I went out of my way to remove them previously and sure enough safe price tried to re-install again tonight.
Avast got to where they are because independent tech's in the field recommended Avast because we could install the free version on customers computers and encourage them to upgrade to the paid version (knowing that even the free version worked well) and we did so because Avast did not play the games that others did with add-ons and spyware type commission stealers, but they have gone down that route.
Although I still use Avast on a few of my machines, I no longer put it on customers systems and opt for others.
Too bad I have been a loyal promoter of Avast for many years.