The small amount of information you give i.e. username, email and password is never given out to any third-parties without your permission. We encourage people to register (a one time process) as it means you can post and edit messages.
We may send you the odd email but you can easily unsubscribe if we decide to send them regularly. Again, your details will never be released without your permission to a third party.
When you login to your account cookies are set on your computer, which are tiny files that store information so that this website remembers you're logged in. These cookies expire in 30 days for security purposes and after that time has passed you must login again.