Dear OpenBDSM user,

When you want to reply to someone's comment to a post, you should click "reply" under the comment to which you want to answer. In this case, the author of comment, to which you reply, will receive a notification about your reply. And if you click "Leave a comment", you leave a comment to the post. I.e. author of the post will receive notification about your reply.

Let's not dwell in the past century. Treelike comments implemented exactly in order to see who, whom, and for what replies.