Habrapish Lack of just one button. Only in one case

Habrapish You receive a letter similar to the following: “The user name invites you to join your 1st circle of friends in Habrahabr. Below is the text of the request, which left Namrek : "

You allow to add you to his list of friends and act with him as well. And then you can not directly respond to his message. There is no "Reply" button .