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I've actually noticed Chegg doing the exact same thing experts exchange did.

For example, if I'm looking up homework help for second order differential equations, I'd see something like this[1] in the Google results. Does anyone know why is this not being penalized?

[1] – http://www.chegg.com/homework-help/questions-and-answers/1-f...

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Same as Quora. I can google it and clcik the link to it, but then it's blurred and I need to login to see answers: "You must be signed in to read this answer."

In my experience Quora ranked a LOT higher before these shenanigans. I do not think Quora is getting the best of both worlds here: High organic rankings and many user sign-ups.

append ?share=1 to the URL and you can see everything unblurred

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