Nope. I've been an EE member since 1999 and have never given them a cent. Some parts of the site are only accessible to Premium Services customers, but it's not all that difficult to earn them -- so no money out the door.
It was hyperbole. I obviously didn't believe that literally zero people browse Quora. I just mean that the site feels essentially dead to me. Ever since Google apparently killed their results, I haven't seen any links to a Quora post. I also don't hear any updates about the company, which used to be a regular occurrence around here a couple of years ago.
Thirded. I feel like an idiot for it, but I do click and read the Quora digest links in my email. They've got an excellent recommendation system set up for that (SVD?).
I think Quora is awesome for finding content related to what I do - being startups. Most of the answers I read on there are of high quality, just like HN.
I've had startups PM me for advice, feedback, done Skype chats etc. I always try to help people when I can as I was once in their shoes. People have also helped me out too.
I dig anything related to tech, I enjoy using HN and Quora, and I feel - by only limiting yourself to one service, limits your knowledge. That's why I use both.
The sign in thing with Quora, did really bug me at the start, same goes for the dirty thing Facebook Messenger did - once, you can get over that, you might actually enjoy it.