When browsing the internet, you will often see ads or other messages pop up on your browser, perhaps as smaller windows or new tabs. These can be legitimate, such as discount offers on shopping sites or informational messages, but pop-ups can also be used for scams and phishing attempts to get you to download malware. Some users prefer to remove the distraction by blocking pop-ups altogether, but you may want to re-enable them if you need to access a specific offer or form.