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> A few years ago it'd be the place to go for in-depth yet concise explanations from experts in all different kinds of fields, and for some very interesting perspectives on different subjects.

If by "a few years" you mean "a decade", then yes. Quora went down the drain between 2012-2013.

There's certainly a lot of that. However, there are still people who really know what they're talking about, who aren't just repeating what they read elsewhere on the Web.

And marketer using it to generate back links.