All the usernames and passwords for users with {@lifehacker.com, @gawker.com, etc.} email addresses in the torrent (plaintext, not hashed). The torrent claims Nick Denton’s password was an 8-character sequence of even numbers, and that he used it everywhere. (Edit in reply: The hackers used this on e.g. his Twitter account IIRC so it wasn’t truncated to 8 characters.) Some of them are even '11223344' or a substring of the author’s username!
That also means that, although unlikely for some, '11223344' could have actually been '11223344aBc$!q'. Not that it would have mattered though!
This is why I freaked out when bluehost.com (AVOID!) required the last four characters of my password to accompany support requests(!).
I don't think I've logged into any of their sites, I use different passwords at different sites and they are generally > 20 chars, so I'm not worried. Yet, at the same time, even knowing all of that, I did a bit of a double take and had a brief "Oh shi-" moment of paranoia when I read the headline.
In fact, if I were say a young starlet that used a similar password for my private email or something as my Gawker account, I'd be really freaked!
It lists a bunch of the password/email combinations (plaintext), and tells a bit about how they did it. I'm guessing they used a dictionary attack for the easy ones. Also displays chat logs from campfire that show the staff in a highly unfavourable light. Then again, their work does that just fine without any outside help.