Re: One should add to the graph...
"Fixed that for you."
No, I think my way was better. Try it. Inform one of them that they don't have to look at the web through a mess of ads, and tell them about Adblocker.
But don't install it for them. Let them install it themselves. They won't; if it actually involves looking for and installing something themselves then they decide that they 'don't mind the ads'.