I've noticed that since the past year, the number of accounts created on Meta Stack Exchange every week has increased noticeably, and has sustained a much higher rate than it has sustained for the previous years.
Here's a query and a graph:
However, I can't firmly place anything on the sudden increase that seems to have taken place near the end of 2018, and the fact that it's stayed at that increased rate ever since.
What's responsible for the sudden and sustained increase in account creation here on Meta Stack Exchange? Is there some new external link to this site made after that time?
Or does it has to do with the fact that the login flows for stackexchange.com and Area 51 now go through Meta Stack Exchange? (I don't think it's that, since I don't imagine a lot of people login through those paths, and I don't believe that it creates a Meta Stack Exchange account, only providing a login flow.)