I wanted to share that we now have a FAQ for Wikispore, to better explain this indeed slightly mysterious concept:

https://wikispore.wmflabs.org/wiki/Wiki:FAQ

And all of your existing Wikimedia user accounts now work at Wikispore through OAuth (thanks User:Tgr!), so I encourage you to join and sign our Guestbook:

https://join.wikispore.org/

We also have a proposal live on Meta, if you'd like to comment there:

https://meta.wikimedia.org/wiki/Wikispore#Discussion

Thanks, Richard (User:Pharos)