Q: How can I find a good wordlist? A: I’ll give you some tips!
A wordlist or password list is useful for automated brute forcing apps as well as for cracking password hashes. Many security researchers have their own wordlist, or multiple ones that are often many GB in size.
There are some large wordlists on the piratebay:
Another good option is pastebin.com. After the many recent database hacks such as linkedin and other sites, lists of the passwords have been leaked all over the place. These lists can often be more useful than a wordlist because they are actual passwords rather than just a dictionary list of words.
Linkedin Passwords http://pastebin.com/JmtNxcnB
Adobe Passwords http://pastebin.com/0UEuRame
Many others: https://www.google.com/#q=site:pastebin.com+password+lists
And this is a nifty twitter account: https://twitter.com/dumpmon