while I am busy doing another startup, here is I can offer from my personal experience of using such platforms:<p>- first up, you need to give users assurance that they own the data. Allow them to export data anytime and that too in a beautiful way. I would hate to loose such memoirs shared with my loved one, just because you failed to raise another round of funding. (Data persistency can well be the primary reason, why people still uses emails; It will always be there.)<p>- how about a personlize gifts on their anniversaries from the service ? you have good amount of data to personalize the gifts. seriously, surprize me here!<p>- I have been using tumblr for last year on same usecase. following stats will help you:
march - we get separated by distance.
april - 111 posts,
may - 74 posts,
june - 39 posts,
july - 36 posts,
august - 11 posts,
september - 33 posts,
october - 60 posts,
november - 23 posts,
december - 1 post.<p>Post distribution: [70% pictures - 10% links - 15% text - 10% videos/music].<p>where pictures, are of one other, old memories, places we visit, things we spot.
where links, are interesting find of the day.
where text, are short letters, quotes. but no chatters.<p>- Now, I would need an information overview of my content pretty much like tumblr or more, with posting abilities of Path or more.<p>- Tumblr isn't built for game dynamics here. She is posting 80% of content and i 'heart' 50% of her content as a feedback to her. A game dynamics which involves more participation from not-so active member of relationship? we are NOT talking about games or chatters(messaging or whatsapp), but subtle or even funny push notifications if she has posted and i have not yet viewed to begin with.<p>- an instapaper functionality, so that we can share things from anywhere on Internet, by just sending an email to the account.<p>- avoid becoming a messaging app, for love sake ;)<p>all the best!