We treat a user's privacy seriously, period. It is true whether or not he/she is registered or logged in or not. It is one of our fundamental objectives in the overall system design. The means by which we use to protect a user's privacy also have a plurality of technical advantages as compared to many other sites.
All registered users need to use a verifiable e-mail address as their login user name. Other information required at the present are their social name and web nickname of their choice.
The registered e-mail address of a user will be use for purposes of user identification and possibly peer communication through the site. It will not be exposed, or sold to any third party prior to a consent from the user is obtained.
Besides the manually operated private distributed certificate exchange mechanism, there is a more efficient public digital certificates database on the site. The user can choose to publish some of their digital certificates to the database, which provides a centralized channel to expand his/her public peer networks. Our system is designed to make it harder for uninvited parties to search a stranger's certificate without sufficient information about the user.
Sensitive information includes information that the site need not know, but it nevertheless has to pass through the site. It includes, but not limited to, a user's credit card number or other sensitive messages between users. A user have three kind of means to use to send sensitive information