Rarest Thing In Your Opinion

a chat or text string with absolutely no random spammig

People just being kind in forums and not turning every conversation into something horrible and nasty. xxx

__ ¡ACHTUNG! __illiterate ONLY __ ¡NOTICE! __ Do not Read Below

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dont't do it

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it's a trap
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So if it is not percieved as it is intended nevertheless as it is rare and funny I mustn't be detered despite determination before examination because that is not a good reason to be detered. Erstwhile: The content is irrelevant!

Me defeating Magnus Carlsen and getting GM title

I'm assuming you mean naturally occurring. In that case my money is on antimatter.

Common sense is pretty rare

Another one: German11 playing a couple of games in a day!

Platinum

Kiddies here not relating everything that happens in the universe to bloody chess.