Internet advertising has shied away from using pop-up advertising as it took up more bandwidth than was necessary, and was more annoying than effective. Some pop-up ads are designed to be a bit more stealthy, however; and will show up under your browser window, or they will remain hidden and make noise. Many ads can be stopped by using an updated browser, but in the case of persistent, hidden ads, you can also check your computer for malware and install ad-blocking extensions. Writer Bio
