Note: I'm a co-founder of Everyme, but no longer with the company.

I'm not even sure where to start here, because your comment deviates wildly from the actual point of the post. It borders on trollish.

"Are you sure the world needs a social network for families?"

Actually, yes. After seeing behavior from hundreds of thousands of Everyme users, and talking to tons of families the evidence seems to indicate that the world does need it. Did I mention that 30,000 people signed up to be notified when a "private social network for your family" launches? I'm not sure how much more confident we could have been in the concept. We used all of the available data to make the right call.

"Well I don't. And neither do the girls on Instagram that have thousands of followers."

You're entitled to your own opinion, but I am certain you don't speak for all of these people.

"WatsApp had the group messaging feature like forever and I've only seen anyone ever use it once"

Anecdotal evidence, at best. WhatsApp has hundreds of millions of users, they keep the feature around because people are using it.

"Group messaging never seemed to be a popular product category, and not one of the top things to do on Facebook (unlike photo sharing) so it seems like the market doesn't need a standalone app for that."

Mark Zuckerberg recently said: "The big stuff that we’re seeing now is sharing with smaller groups". When a founder who has data from 1 billion people says that, you know it's true.