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Don't use sockpuppet accounts to comment on submissions: https://news.ycombinator.com/item?id=13776604

This is really impressive.

How long did it take you to make this?

I started working on it more heavily about a month ago. I already had quite a lot of notes and bookmarks but there were scattered around in various places. It's actually really nice to have a system in place where I can easily add new nodes and information and make sense of it.