Running a volunteer group can feel sometimes like the Greek mythical Sisyphus: just when you get everyone up to date and knowledgeable about what you are doing, people leave and new people join and you have to start all over again. An effective group memory can help. There are many things a new member needs to know in order to integrate quickly. Some people are shy about asking questions which can lead them to contribute with an inaccurate understanding of what has and has not already been done.