Does advertising really work?
Everyone I know mutes TV ads when they come on.
Everyone I know uses ad-blockers online.
I avoid sites that say 'You can't view this site unless you turn off your ad-blocker.'
And some ads are so annoying &/or repetitive that I refuse to use the product on principle.

@Richard_Littler I'm hunting new apartments currently, (and therefore looking to sell mine.)

I simply will not go with any of the brokers who put their flyer into my clearly-marked "no junk mail" letterbox.