I found an issue with my blog settings that explains why comments to some of my posts are not showing up. Issue is found and fixed. I hope I did not give you wrong impression that I am ignoring your comments. I have just never seen them till today. Unfortunately website does not let me to reply to most of them today. I think there is 30 day period within which I can moderate comments and reply to comments. I disable moderation for all but unanimouse comments for now. See how this works out.