The Passwords Twitter doesn't want you to use
The Wundercounter blog has a list of all of the passwords embedded in Twitter's signup page. The list is a pretty broad list of bad passwords that Twitter users probably use more than we might like to hope after years of explaining the need for good passwords. Old favorites like 123456, abc123, and password show up, as does computer, many first names, and of course, twitter.
It seems like most organizations have at least one common password that users tend to gravitate to. At colleges and universities, it tends to be a school spirit oriented password, and for websites, it often involves the name of the site. What's your organization's oft joked about common password?