I was early investor with Chrys Bader previously on his startup Secret. He was a YC batchmate of mine from 2008. I watched him build an initial prototype that had the chance to be a real social network that had very high long term retention, but in the end the company didn't invest deeply enough into moderation and the long term retention cohorts went down steeply past 6 months of use.
Chrys is a great designer and product manager who caught lightning in a bottle previously, and lost it. Founders often catch lightning in a bottle and then fail to keep it because scaling operations like moderation, or sometimes even just keeping the servers online, through hyper scale, is hard.
Many founders never find lightning in a bottle even once. Even in my experience I felt like we caught lightning in a bottle with Posterous and failed to properly bring it to the scale I wish we could have.
I realize I am going out on a limb to defend him here, but founders going back into the arena deserve at least a little bit of defense because it's hard enough to take the chance to make anything ever.
You'll hear more about how Ikaria really works, and I realize the post is light on details, but don't write this startup off before you actually try the software itself.