I got acquainted with many people and even started talking to them over phone just because of comments that I made in the blogs of people who shared perspectives similar to me! But I admit, most of the time my comments were trivial and didnt yield any response though. I don't like replies like 'Thank You' and 'Glad to know that you found my post interesting'. Rather It is better not to reply!
engage well with every comment that attempts to engage with you and your content and in time you will have a base of good comments flowing in.