"FYI: Matrix has launched https://archive.matrix.org/, which makes logs of public Matrix channels indexable by search engines. They made the thing opt-out; the bot (@archive:matrix.org) would automatically join out of nowhere and start archiving. You'd have to ban the bot for it to be removed, which is annoying but OK... if they didn't have a second bot ban evade and do the exact same thing right afterwards under https://staging.archive.matrix.org/ using @archive:gitter.im yesterday."
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