[3np]

Given enough users, you'll have interesting statistics and metrics forming. What are you going to do with this? Might visitor IPs (viewers of Emoji inlined on GH, that is) be processed/retained?

[andrenotgiant]

No, Github proxies and caches images through an intermediary (probably for privacy reasons amongst other things.)

[3np]

I stand corrected, you're right! So seems to be 0 privacy concerns for viewers, here.

GH also seems to use the data-canonical-src attribute to reference the original URI.