Nir Eyal

If the food of friendship is time together, how do we make the time to ensure we're all fed? My friends and I have recently come across a way to keep each other close. It fits into our lifestyles despite busy schedules and a surfeit of children. We call it the 'kibbutz.'

The more readers use the Bible app, the more valuable it becomes to them. Switching to a different digital Bible - God forbid - becomes less likely with each new revelation a user types into the app, further securing YouVersion's dominion.

I think my worst habit is struggling with technology, even though I know how this stuff works, I need to bring conscious thought into how I use.

We originally started AdNectar to serve brand advertisers, but we've now found that our publishers are greatly benefiting from integrating our system. In addition to a new revenue source and the data our API provides, it turns out users actually prefer branded over generic virtual items.

Habits can be good or bad, whereas addictions are always bad.