I don't respond sometimes because it's hard for me to express things. I can come across as sarcastic when I was just making a joke and someone took offense once. When talking in person it's easy to tell if someone's joking; difficult to do in print. I try to just comment if it's a straight forward: that's lovely or you did a good job. If it's general chitchat I usually don't join in so I don't offend anyone else. (I responded to you Lneal-a big step for me LOL!!)