HIBP reports that zero of my addresses have been pwned. Which is weird because those addresses include several that have been pwned in well known cases, and several more where there's no public "We had a data breach" type report but it's clear that somebody did in fact lose all my data.

That's pretty disappointing, it suggests HIBP doesn't have very much of the breach data that really matters, and so many unsophisticated users who get to the site are probably misled.