The server collects many types of automated logs about the site usage, but these logs are not stored indefinitely, and old logs are deleted automatically when they are no longer needed. These logs will not be used to identify our users, unless there has been a breach of security.
Cookies may be either “persistent” cookies or “session” cookies: a persistent cookie will be stored by a web browser and will remain valid until its set expiry date, unless deleted by the user before the expiry date; a session cookie, on the other hand, will expire at the end of the user session, when the web browser is closed. Cookies do not typically contain any information that personally identifies a user, but personal information that we store about you may be linked to the information stored in and obtained from cookies.
Cookies can be used by web servers to identify and track users as they navigate different pages on a website and identify users returning to a website.
Google Adsense may also use Doubleclick DART -Cookies, that are meant to help serve individual interest based advertising. You can deny usage of Doubleclick DART -cookies through www.doubleclick.com
You can also always control your cookies through your browser. Deleting all cookies from your browser, does not constitute denying their further usage however, but on your next visit a new cookie will be created.