Thanks, Glenn. I can see how much effort you and some pretty amazing Google plusers have invested in setting up collections and communities. I don't know what it is about Google that has seen them go through so many social products only to abandon them. I wondered if being hosts to G+ collections might cause them to stick with it over the long term.
We didn't set out to solve the same problem as Google+ apparently did, to compete with Facebook. We saw that as mostly status updates among friends & family. We thought what the world really needed that Facebook didn't fulfill was the ability to indulge passions you may not share with casual friends & family. Forums provided that (I own a very large one), but they are mainly good for niche topics. It's hard to discover and bounce between the zillion forums that exist in the world with differing software, moderation policies, etc.
So our idea was to organize around topics that the community could create whenever they needed a new one. They could be really specific for better signal to noise, you could follow them, and the friction of jumping between them would be very low.
I'm sure the viability question of Cake will dog us for years, as it did at SmugMug for probably our first 8. Can't blame anyone, I would be asking the same questions if I were on the outside. We do get requests to power Flickr forums with Cake's software, and since me and my family own Flickr, it seems logical, but the technical undertaking with all that legacy content they have feels overwhelming. I wish it weren't so.
Anyway, thanks for giving us your time and I hope we can make Cake wonderful for you and your Google+ friends. 🙂Let us know your thoughts as you explore.