What applications would you encrypt data for?

Thank you for your responses to our previous question: Should unencrypted folder support be removed?

Based on your responses we’re leaving it in, but some UI changes will make choosing no encryption much more deliberate.

We’re cooking up an incredible update for you guys. It’s going to be here really soon. If you can’t tell by the italics, I’m quite excited.

We’d like to know: What applications would you encrypt data for?

Here’s the list that we have as of this writing (and hopefully it’ll grow a lot): Address Book, Mail, iCal, Safari, Camino, Firefox, iChat, Adium, Colloquy, X-Chat Aqua, and Things.

Update: Please restrict suggestions to applications that store their data to a specific location (not determined by the user). For example, document-based applications that let users save documents to any location don’t count.