I think the proliferation of the Spaces feature in Quora has definitely degraded its value to end-users.
If you join a typical busy Space on that platform, you’ll instantly see what I'm talking about.
A lot of the questions there seem like they would be the type of queries consumers would ask, but when you click through the answers, they are so shallow and short that there's really not much value.
It used to be that Quora would automatically collapse those answers because they're simply too short to have any value.
But they leave them as is because they are connected to a Space—the idea being that the Space adds some sort of categorization to the answers, and supposedly, this adds value.
I don't see that because the questions are valuable, and they're begging for real answers, but it seems that a lot of the Spaces there—especially in the marketing niche—are pretty spammy if you ask me.
So to answer your question, you're probably right.
Quora is spammed to death now if people post stuff to Spaces.
I would suggest that if you're going to do Quora marketing, focus on questions that aren’t part of the Spaces system.
As far as your question about starting a similar site with better moderation, you may be on to something.
Remember, Quora is just a relative newcomer. The real pioneer in that space was Yahoo! Answers.
For a long time, Yahoo! Answers dominated the question-and-answer space on the internet, and then it just got swamped by Quora.
Sadly, given Quora’s pivot to the Spaces system, it’s definitely vulnerable to an up-and-coming challenger.
The key is moderation, but to do it in a cost-effective way.
It’s very easy to say that you will moderate a question-and-answer platform if you only have less than 100,000 members.
But if you have millions, and people are generating tens of millions of pieces of content month after month, it can be a logistical nightmare.
I would suggest some sort of machine learning or some sort of a crowd-sourced content moderation program—that’s where the real innovation will probably come from.