1. Go to PrivateTalk and create a personal key. This personal key is made up of two parts: a public key and a private key.
2. Don't give the private key to anyone! You can put the public key in your Bitcointalk profile, for example.
3. If I want to send you a secret message, I go to PrivateTalk, create the message and enter your public key.
4. A link will be generated and sent to you via PM.
5. You enter the link and have to use your private key to open the message (password type).
What do you think of the idea?
OK I get it now, you first need to know the public key of member who is receiving your message.
It sounds good in theory, but clear and simple instructions must be written for people to actually use this.
I can this can be very useful for keeping privacy in some dark scenarios of a hacked forum.