So, say you're using Transmit on a couple different machines at different locations. You're lazy as well as forgetful and you can't remember a login/password combo to a particular FTP site that - alas - is entered into your Transmit at work (which machine happens to have a static IP).
No problem, you think. You mount your work machine's home directory on your personal mac at home. You navigate to your ~user -> Library -> Preferences directory, copy anything Panic/Transmit related over to your ~user -> Library -> Preferences directory at home, and you fire up Transmit. Sure, all the addresses are there. Also, the usernames. BUT! Panic has (rightly) decided to use Keychain to save all your passwords! What ever shall we do? This is what you do (with your other home directory still mounted):
Mac OS X Hints
http://hints.macworld.com/article.php?story=20030129053610631