It is probably the time of day that you are posting. I don't know what time that the newsletter is actually put out but there are so many post now that it doesn't take too long for a post to just move on down the line. Many of mine have not had many responses. And, I think that is the reason. I'm just trying to figure out when the best time to post is. Also, many of my post never make it to the newsletter. I count myself lucky when they do.