As a developer I hoard many links and also would like to get notifications on different tasks being finished (script/RSS/IoT) so I've built a chat web app for myself where you can create a channel for each specific notification or links to read later.
The web app is a PWA so I can install it on my Android Mac and PC via Chrome browser without app/play store and access from anywhere.
I took it further by adding Webhoom API for the notification and a Chrome extension to share links from my browser to the channels.
People liked it (didn't try to market so much) but they wanted encryption so I have added end to end encryption as well.
I'm currently working on (on my spare time) big files support up to 4GB from any browser including live preview and video streaming for well known file types.
This reminds me Yahoo! Answers clones 10 years+ ago. To get traffic to website and cheat the search engine they would have index the Yahoo! answers website for specific niche category and create a garbage website with questions and answers not crediting the source and cramp the website with Ads everywhere to earn massive revenue.