I'm sure this is the right idea to invite people to volunteer for checking information, but this creates needs to build some kind of rating or double-checking system for volunteers too (something like Wikipedia authors/moderation system).
About fact-checking. I think this feature contains two big parts: 1) extract a fact from the text 2) to check a fact
For 2nd task probably needs to create some kind of "fact-tree" (something like Word population>USA population>target audience for service potential audience...)
I completely agree, I think the next step will be to open up user accounts (but keeping them optional), so that I can get a track record for registered users and invite the most active/correct ones to start moderating. At the moment I can go through the submissions myself and it doesn't (yet) take up that much time.
I find the other part (automating validation) fascinating intellectually, but I'm currently focusing 100% on implementing the functionality of the site itself (Reddit integration is at the top of the list), so this will have to wait. If you're interested in discussing this further at any time, you're more than welcome to also reach out (my e-mail is in my profile).
About fact-checking. I think this feature contains two big parts: 1) extract a fact from the text 2) to check a fact
For 1s task on the basic level and numeric data, it seems not so difficult with NLP (just tried to create a tree and it looks pretty simple: https://nbviewer.jupyter.org/github/SerafimPikalov/Sandbox/b...)
For 2nd task probably needs to create some kind of "fact-tree" (something like Word population>USA population>target audience for service potential audience...)