You've just opened a can of worms. It raises a very interesting question: when asking something like

> if I want to know the most commonly used spelling between two options

do those mirrors count as "use" of the word? Or does "use" refer only to the original writer?

If a neologism is written once and read by millions, it carries more weight than one read by only a few people. Perhaps the same goes for spelling variants: the more people see it, the more people agree it's the typical spelling. Lots of mirroring could be a decent proxy for lots of readership.