Everyone is trying to get into this, and for good reason, I think.
My family is filled with people that always have access to a camera and to the internet via their phone. We're spread out geographically and don't get to see each other very often. There is a HUGE opportunity to bring us closer together that would be greatly valuable to us. I would love it if part of our daily routine included looking at all of the photos anyone in the family has taken in the last day.
There are lots of solutions for us to do this, but for whatever reason, nothing has taken hold. Maybe everything is too manual, or maybe social networks are still focused too much on the browser and not enough on mobile. But for whatever reason, it's not happening for us. I suspect we are not alone and I think the explosion of people trying to get me to buy into putting my photos on their free service is indicative of this.