This seems like a service that some families would pay for. I wish I could have had the story of my grandparents memorialized like this so that their stories didn't have to die with them. Why not do these video interviews as paid interviews...and create pricing so that for every one that you do, you also offer a free one to someone who can't afford it? It's kind of like Tom's Shoes, for every pair purchased, another pair is sent to a third world country. The free versions are the ones where you could furrow out the people you want to feature in your book....as well, you may also find interesting stories from the paid versions...in which case you could ask if the stories may be featured in the book. It seems like this could end up being a win-win business.