Not even hours after I've logged in, I started receiving spam. I don't know if it's Quora's (the publisher's) fault for passing on my email, or just a very poor implementation of the "social" aspect of the app where other users would mass-collect email and spam those. Either way, getting 5 random spam emails (two in mandarin, I think) in less than 8 hours of signing up was an awful experience.
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