_utmz </strong> <p>This stores the domain name (hash code) of site, time when cookie last set, total number of visitor sessions, number of different channels or sources through which this site was reached, source of the last cookie update, search hit tag identifier (or just 'organic' if reached via normal search hit), search medium, keyword phrase used to find site.</p> <p>Expiry time - 6 months</p>