Have been trying this for the last hour or so and am finding it hopelessly addictive. I think the app will do well - it really just forces you to share the raw moment without the normal positioning that comes with social media. I was skeptical, but the app blew me away.
A quick look:
http://thenextweb.com/apps/2015/...
@thomasle0n@ow Yeah, the invites are either a queue, or if you know someone you can get a code. Even Casey admitted it's a pain, but I can see how they're using it to try and grow.