RE: more than 500,000 steemit accounts / mehr als 500.000 steemit Accounts

[pikaboo]

I think you are spot on with retention. Challenges might be a great way, like the #sevendaybnwchallenge. I think it is more a job of for the community to lay down a foundation of P2P interaction that the devs might build on, afterwards. Just my 2 steems. :)