Just noticing a trend

I've been on the blogging tour for a little while now. I just got my laptop about a month ago and have tried to make up for lost time. Pretty much, if you look at a comment on any of my blog links, I'll have written something. BUT...and this is what I've been noticing...I kill comment strings, or I just catch them at the wrong times, because I tend to be the very last person to comment on every single post. I have a sister we like to make fun of because she kills joking strings, I wonder if this is just something that runs in the family?