Thank you, DavidR.
I wonder if I'm going to need to go elsewhere, like Google's search engine, to find examples of the Avast adverts? I don't suppose you'd have a folder with screen shots of such ads, would you, DavidR?
I did see Asyn's request for examples to be posted, but ... - - - Well, I should be patient, right?
Anyway, thank you for the prompt response.