Between having seen the list and the responses to Justine's thread, it's quite obvious that some people just don't grasp the very basics.
MN has been subjected to something that could happen to pretty much any site if the hacker is creative enough and I personally think they've handled it admirably. But they can't be responsible for an individual user's level of vulnerability.
Now, I'm not suggesting everyone learn how to set up VPNs and all that, but basic security is a must people.
Do not use the same password for everything.
Change passwords often.
Use complex passwords.
Use an email address that does not require your personal information to obtain.