No problem, it's good to ask those questions. Sometimes we also learn from them.
The outages of last days were because of database queries that took very long, which were fired many times.
This is being looked into.
The downtime is not related to user growth.
We do however plan to change our registration page, so it will refer to other instances and explain Federation in short. New users will be advised to choose other instances but will still have the option to sign-up here if they would like.
But all the troubleshooting these downtimes hasn't left a lot of time to work on this...
(I'll add links / descriptions later)
I host the following fediverse stuff:
And these are other things I host: