Ok, this post is a little belated, but we just wanted to point you to our article on the excellent web blog ThinkVitamin. It covers our very own Encrypted cookie API, but goes into more detail and usage scenarios.Here's the article:
http://thinkvitamin.com/code/encrypting-cookies-in-the-browser/
Please tweet the above article, like it, or sign-up and try out the API if you find it useful.
We just wanted to make a quick post to let you know that our AccountKeeper gadget for Gmail, which allows you to manage your accounts and passwords easily in your browser, is now called AccountSnap.