[drusepth]

The "ping" solution is an interesting one that I haven't seen proposed before.

At what rate would you do these pings? I don't know how upgrading/downgrading works at GitHub but if they do any sort of refund/credit when you downgrade, it seems like there's some interesting implications for abusing the system (e.g. upgrading/downgrading between pings for "free" service if the time between them is too long) versus performance (e.g. how do you update all users per ping in a timely manner if the time between them is too short?).

Would love to read up more on this approach; seems interesting!