Ederson Peka

This plugin adds a checkbox to the default comment form, allowing the commenter to restrict his comment’s exhibition only to site owners.

Private Comment

Allow commenters to choose restrict their comments exhibition only to site owners

DigitalCube Inc.

webnist

Because you can not be viewed unless you log When you activate this plug-in, 
You can start a private blog. 
Furthermore, you can also be used for communication between the acquaintance.
You, there is a case to put the BASIC authentication if you create a site with demonstration case of the author, it is not smart. 
Troublesome if you use this plugin, you can also authenticate goodbye BASIC.
Sorry, this version was support BASIC authentication.
About the origin of the plug-in. 
There is a culture of “Ichigen-San Okotowari” in Japan. 
Speaking of “Ichigen-San Okotowari”, the first person not related at all to the shop is meant to be refused to enter the shop. To enter into such stores must be some referrals from persons acquainted with the shop.

Private Comment vs Ichigen San