What is this 'permalink' notation I see beside the post #?

This appears to be a new feature.

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The dose makes the poison--Paracelsus (1493-1541) http://en.wikipedia.org/wiki/Paracelsus

I don't know. That's why I'm asking--Noclevername

Intelligence may not be clearly defined, but you know stupid when you see it--Noclevername

Science is a way of thinking much more than it is a body of knowledge--Carl Sagan (1934-1996)