It's a winner of an idea, because Facebook lets us work around the real goal of grandparents when they ask us for regular updates; attention. Giving our elderly family members ways of passively observing us defeats their goal of wanting us to talk to them, but a NanaGram is a specific, actionable gift that demonstrates this abstract, "Well they must be thinking of me!" concept that they can then extrapolate however they need.
@otras thanks for sharing. It's an honor to be mentioned on HN like this.
One of the big goals of the product is to increase interaction between loved ones. I wrote about this a bit more at https://nanagram.co/blog/niche-start — we have a feature, which allows you to list names and phone numbers of you and your siblings on a cover photo. I get reports all the time of grandparents who go down the list, dialing each grandkid to talk through the photos with them.
