Heh — my wife just can’t get into tech. Until she finally gets a smartphone, that probably won’t change. She barely checks Facebook or email.
Springpad is far more complex than Evernote, and can be somewhat overwhelming as a result. THat said, they have improved in their tutorials and such immensely, and have made several changes to their interface to make things easier. In theory, you could approach the GTD method I laid out for Evernote, but you would have alter it to fit. There is a GTD app for Springpad, I believe. That may have changed recently.
I’m doing a follow up interview with the Springpad CEO to talk about their changes next week and will have an updated article, likely the week following. They apparently have some cool new features on the way as well, so I may have a better answer for you then.