We have two mailing lists available, RTW and RTW-Discuss.  

RTW is a one way list.  You will only receive our travelogue entries.  No  other messages.  you will not be able to send messages to the list.  This list is for those who only want to read our travelogues.

RTW-Discuss is a two way list.  It will have our travelogue entries, plus any discussion that anyone on the list wants to post.  This list is for those who want to read our travelogues, and respond and discuss them with us and others.

There is no need to join both lists since our travelogues will go to both lists.  Just join one or the other.