[danielweber]

Almost 20 years ago I saw a great password-picking article that still holds today. http://world.std.com/~reinhold/diceware.html

Take a list of 6^5 words. Roll 5 dice. Take that word from the list. Do this 4 more times. You now have a five-word passphrase like "moire fraud 80 row bernet".

Even if someone knew the exact method and list you did to get that passphrase, there are 28430288029929701376 combinations, giving you over 64 bits of entropy.

Someone has probably tried to rainbow table all those results for MD5. If a core can do 1 billion hashes per second, it would take 900 core-years to build a complete list of all those combinations, which is probably feasible for a small group to put together, but messing with the list just a little bit or adding a 6th word would likely put you past that even for a crappy MD5 hashing.