I see what this app is about but at the same time it enforces information overload which is an instant turn off for me. What'll happen if I were to use it: I'll pile up more and more stuff I'm interested into, I'll receive news about all things I've subscribed to and eventually I'll get annoyed from the "spam". Then I'll unsubscribe realizing that information overload can't be handled with apps, I have to solve that problem in my head. In the mean time Obsidian does the job for me if I'm really really interested in something - I write it down and it's still not 100% that I'll come back to it later. That's a no go for me with all the apps that are used to create a "personal encyclopedia". Engineering wise I can't say anything but good about the app. Keep it up someone might see things in a completly different way that me, there still might be a big market for this.