I haven't read them all yet. Some days I'll read a few, some days none. I am not sure where I left off last because I do sometimes read newer posts, but then I always go back down to the bottom of the list and pick up where I last remember leaving off. Usually the title will jog my memory as to whether I've already read it. It's wierd (or not) how I always seem to click on just what I need to hear that day.