https://www.reddit.com/user/Paddy48ob/
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signed a post as "Pat (OBC)" obstensibly for Obsidian Book Club via https://www.reddit.com/r/antinet/comments/13m2j5b/comment/jkzhedk/?utm_source=reddit&utm_medium=web2x&context=3
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also mentions being a 20 year user of TheBrain at https://www.reddit.com/r/antinet/comments/101st9c/comment/j2qfh5d/?utm_source=reddit&utm_medium=web2x&context=3