GTD for couples
I'm helping my sister and brother-in-law with their organizational issues, and I'm wondering if anyone has tips on setting up GTD systems for a couple. I think they should each have their own next action and project lists. But a whole lot of the "stuff" they're coming up with is joint: it's about the house or the baby, and the issue of who's in charge of what is somewhat sensitive. Whose project list do things like this go on? Should we make a joint project list? Suggestions?