While looking for a list of BinderHubs I noticed that https://usage.mybinder.org/ has a dodgy SSL cert
Thanks for letting us know. We’ll track it down!
Hmmm, after looking through GitHub a bit, this is an issue where this URL is used:
That issue wasn’t resolved, but it looks like maybe somebody took a stab at adding
usage.mybinder.org as a thing that other binderhubs can ping?
I don’t know who might have taken a stab at this.