A “cookie” is a small text file created on the user’s computer at the time when it accesses to a particular site, with the purpose of storing useful navigation informations. The site web server send cookies to your browser and use it during next visit.
The Social buttons are special “buttons” on the site representing icons of social networks (eg Facebook) and allow users browsing to interact with a “click” directly with the social platforms.
Social buttons used by the site are links that refer to the account of the Holder on social networks depicted. Through the use of these buttons they are therefore installed third-party cookies.