Why do our user graphs have these huge spikes?
There were three usage spikes in April and one at the end of May. They happen in many countries at once. So my assumption is that they're errors in our user counting algorithm.
The ones in April happened around the same time as #2704 (moved) blew up, so we thought they were related. The one at the end of May shouldn't be related.
So what is changing in the measurements we gather that makes it spike?
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