Hey HN, dave from Minefold here. Would love any feedback and happy to answer any questions about our service you might have.
Secondly, can you export your world data if you chose to leave?
Re data export: absolutely. It's not automated at the moment but shoot us an email anytime you want a data snapshot.
> "Publish games and app activity Minefold may publish scores, achievements, and other activity to Facebook."
That's unacceptable. I have not begun to use your service yet, I have no trust for you, and you haven't told me in any way whatsoever what sort of activity you intend to post.
No deal.
Many sites have begun telling users exactly what user actions will be posted to Facebook. Others use a very simple "we will never post anything without asking you first" prompt to head off these concerns. Both ways work.
But as it is, I have trouble seeing how a hosting service has any business posting to my FB feed.
It would help a lot if you said as much on the site itself :) Also, the permission-to-post can't be turned off at the permission prompt - I'm unsure if this is a Facebook thing or if that permission is flagged as required. Might be worth looking into.
In short words: how about to make portals from one instance to another? Looks like we have really deep understanding how to make this stuff works, at least from gamedesign side. Are you ready for cooperation?
We're keeping a close eye on it ;)