The phrase "advertisements are often" is correct and usable in written English.
You can use it when discussing the frequency or commonality of certain characteristics or themes in advertisements.
Example: "Advertisements are often designed to evoke strong emotions in order to capture the audience's attention."
Alternatives: "ads frequently" or "commercials are commonly".
Images and advertisements are often emblazoned on the front of the East Stand, most often advertising Nike products, though a tribute to the Busby Babes was displayed in February 2008 to commemorate the 50th anniversary of the Munich air disaster.
"Advertisements are often planned well in advance and we are not able to foresee or control unexpected and unfortunate situations such as this.
The advertisements are often virtual echoes of the commercials that the candidates run, but they avoid terms like "vote for" or "defeat".
All the proposed systems in [6 8] have in common with our work that they do not seek particular features of certain classes of the advertisement; for example, the advertisements are often followed by two blank/silent frames.
Healthy older people volunteering for participation in research in response to advertisements are often fitter than the older population at large, but interestingly the incidence of falls in our control group was very similar to that found in most community based studies, suggesting that the control group was reasonably representative, despite the limitations of using this recruitment method.
Marketing research has shown that direct product exposure (e.g. sampling or using a product) results in higher, and more firmly-held beliefs and attitudinal confidence in the product compared to indirect product exposure (e.g. viewing advertising materials) [ 19], presumably because people generally trust their own judgment, but recognize that advertisements are often biased.
In the mass media of the day, with its appeals to a booming youth market, movies and advertisements were often "calculated to produce sexual thoughts and reactions," to the point where "we live in a sea of sexual provocation".
Promoted Tweets are seeing greater "percentage points of engagement" compared with traditional Web advertisements that are often only clicked at a rate of a fraction of a percent.
Television advertisements for prescription drugs are often credited with accelerating ever-rising sales of blockbuster medicines.
These beacons, which are often display advertisements placed by advertisement data aggregators such as Microsoft, Yahoo, Google, AOL or Quantserve, are now ubiquitous.
Its site hosts various old advertisements in which cute children are often featured and a famous spot from 1970 in which a boatful of happy Faygo consumers sing a heartbreakingly sweet song about "Pony rides and Sunday nights/roller skates and yo-yos".
