Your personal details, including email address will be accessible to the Administrator only. 

If anyone wishes to get in touch with another ex Ridley student directly, they should request contact details from the Administrator, who will then forward this request.  It's then up to that person to decide whether or not to make contact.  This may seem very formal, and to some unnecessary, but as you all know, data protection is a very real issue these days.  Of course, if anyone wishes to invite contact by publishing their address details in their Personal Update, that's up to them, but the security of the site cannot be guaranteed.