Gmail Encryption in Firefox

For Christmas this year, my brother decided to get me the "Wrath of the Lich King" (WotLK) expansion for World of Warcraft. A fine gift for any geek/gamer. I had already downloaded the 10 day free trial so all I needed was the keycode, no need for buying the disc too.
Through some confusing circumstance, the only way to do this was for my brother to send me his credit card information and suffice it to say that he's in a place where he is less than confident in the fidelity of his internet connection. He rightfully had significant misgivings about sending his credit card information in the body of an email.
I suggested that we use GPG to solve this problem. Here's how:

1. Download and install GnuPG. The application itself is a command line application so if you're not comfortable without a GUI you may want to look for a different solution.
2. Install the FireGPG add-on for Firefox.
3. After restarting Firefox, right-click anywhere on the page and go to FireGPG > Key Manager. In the pop-up window, click the "New key" button.
4. After your key is created, highlight the listing and click on the "Export to file" button. This is your PUBLIC key.
   
5. Send your PUBLIC key to anyone you want to be able to send you encrypted information. This email can be plain text in the body of an email or as an attachment, no need to encrypt anything just yet.
   
6. If someone sends you their public key, you need to add it to your "key ring" so that you can send them encrypted information. The easiest way to do this is from within Firefox, select everything between:

   -----BEGIN PGP PUBLIC KEY BLOCK-----
   
   ...
   
   -----END PGP PUBLIC KEY BLOCK-----

   and right-click, go to FireGPG > Import. Now you can send them encrypted messages!
   
7. Navigate to https://mail.google.com/mail/#compose and you'll see a couple buttons for encrypting and decrypting messages. Now you can send and receive sensitive information with a MUCH higher degree of security.

If you want to practice, feel free to import my public key and send me a message. I'll decrypt it and send one back to you!

-----BEGIN PGP PUBLIC KEY BLOCK-----
Version: GnuPG v1.4.6 (GNU/Linux)
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i+NPAJ0dzWQk2izPqks6yd4Y8mTuByFo+A==
=OosZ
-----END PGP PUBLIC KEY BLOCK-----