Would be amusing to have an hibp breach count badge next to peoples usernames on blogs/etc. alongside their twitter badge, SO scores, etc.. Might help to raise awareness of hibp.
The entropy and length of PWs and total pwn count and domain or user.
What about one if you’ve used one of the most common passwords “Top N worst passwords”
Oh yes the badge idea sounds awesome!
A badge showing how many times they have been pwned with the same email address and password combination.
Richard Gailey commented
Sure, sounds fun.