hi, if you look at your comment box, along the bottom extreme right are four icons the third icon along with the paper and the quill pen on it, hit that box and it allows you to do a quick response to someone. A dialogue box will appear and you type your comment in there ad then hit 'post quick reply' underneath the dialogue box and your done. It takes a little while then for your reply to show up online as all the responses are moderated. Good luck and welcome.