A "Private Post" is just like a regular blog post, but only the intended recipients will be able to see it - it is private. This is a brand new concept introduced recently - it is a combination of email + chat + blog.
1. Like EMail: It is like an email - only the person addressed to will be able to see it. 2. Like a Blog thread: It is also like a blog thread, because all replies will appear in the same thread. (By contrast, email messages are separate and the same discussion thread may not be grouped together).
3....
more... Like Chat: It is also like a chat, except that you need not be present immediately - the conversation can go on over a number of days.
All Private posts will have a separate alert message, for the intended recipients.
Thanks.