The phrase "advertisements about" is correct and usable in written English.
For example, you could say "I saw several advertisements about different types of home appliances."
The Advertising column in Business Day on July 20 reported a growing trend of advertisements about advertising.
It focuses on two key themes: the development of advertising techniques, and the story encoded in advertisements about the society that produced them.
It has organized events and bought online advertisements about gun control and immigration issues.
And competitors to Cablevision, like Verizon, have also been buying advertisements about their services.
(Hence the countless reports on medicine and the corresponding advertisements about acid reflux and incontinence remedies).
(ii Presumption regarding certain paid mass media advertisements about highly publicized legislation.
In California, for example, she has run advertisements about the environment and energy.
Their faces are far younger than those that appear in public service advertisements about domestic violence.
His decision to appear in television advertisements about the tires was widely questioned.
Not all of the advertisements about the Arbaugh case were paid for by the Benjamin campaign.
And, surprisingly, some of the most forceful television advertisements about the spill are appearing not in Louisiana but in Missouri.
