Sure. I license it public domain (CC0). No attribution required.

The dips in the graph could be caused by some of the servers/instances going offline, post deletions, or a combination of both.

The 90-9-1 principle may also be relevant here: 90% are lurkers, 9% are contributors, and 1% are creators.

I don’t think that SimilarWeb includes app traffic in their estimates; they seem to focus on web traffic only. App traffic would be interesting to track, though.

Apollo for Lemmy would be great. I’d definitely pay money for it. For now, I’m trying wefwef. I love it so far.