Aether is a decentralized alternative to Reddit, set up as an application rather than a web page [1]. It's been around for a number of years and basically nobody uses it, but last month I made a math sub anyway and populated it with some initial posts to set the 'culture' of the community. Right now it looks like this:<p>https://i.imgur.com/Asf9NKh.jpg<p>The intent of the the sub is to collect well written and designed, information dense expository materials for mathematics. The intent is <i>not</i> to be a Q&A discussion forum for learning the standard math curriculum. Someone else might create a b/LearnMath to fill that role!<p>Of course I don't expect this to produce a firehose of 'content' - this is a good thing! Everything on the internet does not need to be subject to perpetual daily churn. For example, K. Conrad has a tremendously useful set of expository notes on his website [2] that he occasionally adds to and I occasionally refer back to. This is the model I have in mind, I want to build a community aggregated collection of great resources that we can refer back to (and comment on) over time.<p>I hope you will not be too turned off by the fact that nobody uses it yet (until all of you join!) and consider checking the sub out!<p>[1] https://getaether.net/<p>[2] https://kconrad.math.uconn.edu/blurbs/