Submitted contents are not editable and there is no way to change the title of the submitted content. And there is also no way to delete what you have submitted. From a UX point of view I think this is very none-intuitive.

(UI-wise it is not bad in general except when you want to select the topic it shows up a dropdown list of 2000 things. Also having fake comments auto-generated makes me feel like this is not a finished product but a POC.)

And not sure how but I ran into Error 500 quite a few times.

Overall I think the idea is great conceptually but as a product it is trying to do too many things at once. If OP intends to scale it up I think it would be nice to focus on fullfiling a particular niche first. Or in Paul Buchheit's words: it's better to make a few people really happy than to make a lot of people semi-happy i.e. at least from a product standpoint. Of course as a hobby project I think this is still pretty cool!

Haven't read the source so can't comment too much on the arch and code. I think it has the potential to be further developed into a very powerful CMS for domain-specific knowledge management, or a CRM, etc. B2C-wise as a content-discovery plaftorm I don't see how this is going to work, except becoming a haven for ads which is probably the last thing OP wants. Suppose it does become a social network as OP has intended, when it grows to a certain scale it will run into the same content moderation problem as hn, etc (https://news.ycombinator.com/item?id=23806426). On the other hand B2B-wise it may be able to become ramen profitable.

p.s. to OP: can you delete the duplicated entry for me? Thanks. Due to the crashes and the name not showing up properly I submitted my app https://archy.sh/ with mutiple entries.