Cookies are not acceptable ever.
The browser asks the user if each cookie should be accepted.
The cookies are always accepted.
The browser also may include the possibility of specifying better what cookies have to be accepted and which not. Specifically, the user can normally accept any of the following options: reject cookies from certain domains; reject cookies from third parties; accept cookies as non-persistent (deleted when the browser is closed); allow the server to create cookies for a different domain. In addition, browsers can also let users view and delete cookies individually. More information on Cookies in: http://es.wikipedia.org/wiki/Cookie
This site can also host web beacons (also known by web bugs). Web beacons are typically small images of a pixel by one pixel, visible or invisible placed within the source code of the web pages of a site. The Web beacons are used and are used in a manner similar to cookies. In addition, web beacons are often used to measure the traffic of users who visit a web page and get a pattern of users of a site. More information on web beacons in: http://es.wikipedia.org/wiki/Web_bug
Google Analytics: http://www.google.com/intl/es_ALL/privacypolicy.html