Like Facebook, Google Plus allows you to send a private message to another person. The only problem is that this feature is not publicized and a lot of people are not aware of this capability. Here is how you can send a private message in Google Plus.
1. Open your Google Plus page and type in your private message. At the “To” field, enter the name of the person who you want to share the post with.
2. To prevent the recipients from sharing your post and make it not so “private”, click the down arrow beside the “To” field and select “Disable reshares”.
3. Click “Share”. The recipient will now receive a notification that you have shared a post with him/her.