These elements are necessary for the basic operation of the website.
These elements are used to deliver ads that are more relevant to you and your interests. They may also be used to limit the number of times you see an ad and to measure the effectiveness of advertising campaigns. Advertising networks generally place them with the authorization of the website operator.
These elements enable the website to remember the choices you make (such as your username, language or location) and provide enhanced, more personal features. For example, a website may provide you with local weather reports or traffic information by storing data about your current location.
These elements help the website operator to understand how the site works, how visitors interact with the site and whether there are any technical problems. This type of storage generally does not collect information that could identify a visitor.