[dpick]

Unfortunately because we are just looking at public data online (including Github, StackOverflow, and Meetup) if people don't use those services (or contribute to open source) we won't discover them or be able to a make a prediction about their likeliness to leave.

[0xmohit]

Maybe you should start looking at Keybase [0] too. It might help you link personal websites, github, twitter, ...

[0] https://keybase.io/

[dpick]

Thanks! We do actually use Keybase for discovering social accounts as well.