Mingye Wang is a user on mstdn.io. You can follow them or interact with them if you have an account anywhere in the fediverse.
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Since everyone is asking, I'll answer here and hope people can see this: - Node colors mean communities found with the modularity measure (e.g. blue instances are mostly japanese ones) - Node sizes mean number of connections, not number of users
@pea@fdavidcl It's probably the "mastoverse" as defined by servers that support mastodon's API. This would include Pleroma, but not old school GNU Social.
If the image was measuring the entire OStatus Fediverse, major GNU Social nodes like quitter.se would be visible.