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Not sure, but it looks like the creator is still active at https://x.com/lynnetye you could ask her there

Thanks! Looked her up, found the archieve of email newsletters of Key Values and it seems that she stopped the site in 2024: https://us16.campaign-archive.com/?u=2f12805812a2c078784bbfe...

Too bad, it was a nice product.

ah too bad.