went a little more in-depth on the facebook autofill telemetry thing in a blog post: https://detriot.org/facebook-autofill-logging/
tl;dr firefox allows autofill snooping, but chrome does not! we should fix this!!!
Why is this step necessary? mastodon.sdf.org might not be the server where you are registered, so we need to redirect you to your home server first.
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