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Hi Nick, this question is not really a good fit for SE, as it stands now. Perhaps you might want to change to something like "How can I prevent bad passwords", or "What should I do to prevent bad passwords".
The password analysis is done on password lists leaked from security compromises at major websites. When more passwords get disclosed, the analysis does get updated, but hopefully these sites learn their lesson and start hashing passwords.
As for my list at xato.net, I do keep collecting passwords every day. I am currently working on improving my parser but as soon as I finish that I have a few gigabytes of passwords dumps to process. The fact is, however, that the top 1,000 passwords lists have hardly changed much over the last 20 years.
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