After reading a story, you can add a positive comment in the box below it. Once approved by the author, it will be visible to anyone who reads that story. But suppose you want to respond privately. How do you send a private message to another user?
Just click their name wherever you see it. From their list of stories, click the link at the top to view their profile. (You can also Search for them; remember to select Search Members.)
Click Private Message. Enter your subject line and message, and click Send Message to send it.