How to Solve Any Problem?
supermemo.guru
supermemo.guru
https://news.ycombinator.com/submitted?id=yamrzou
(I feel obligated to post a reason for flagging submissions)
I don't think they are spam nor insubstantial, HN is for anything that satisfies intellectual curiosity.
Revoking flags and please excuse me. I'm a bit accustomed to find less than sincere submissions under /new.
I still don't like supermemo.guru, but that's just my own opinion and no reason to flag. Please excuse me.