I would like to try it, but I have no idea what you are going to post to twitter. Could you explain somewhere exactly what gets posted and when. Also, can I c

I would like to try it, but I have no idea what you are going to post to twitter. Could you explain somewhere exactly what gets posted and when. Also, can I control what is private and public? I get that a totally public to-do list might make people do them better, but I just need to understand exactly how public it is before I type my to-dos into it.