We may collect information about your computer, including, where available, your IP address, operating system and browser type, for system administration and to report aggregate information to our advertisers. This is statistical data about our users browsing actions and patterns and does not identify the individual. For the same reason, we may obtain information about your general internet usage by using a cookie file which is stored on the hard drive of your computer. Cookies contain information that is transferred to your computers hard drive. They help us to improve our site and to deliver a better and more personalised service. They enable us to: Estimate our audience size Store information about your preferences and so allow us to customise our site according to your individual interests Speed up your searches and recognise you when you return to our site.