A good example of why using gist for your corporate blog may not be such a good idea. Right when you are getting a lot of attention your post becomes a lot less useful.
Its too bad because I was interested to read the article
http://www.onlineaspect.com/2007/06/08/auto-detect-a-time-zo...
My code has since been adapted and lives on as jstz.min.js. This is the best library I know for handling this sort of stuff: https://bitbucket.org/pellepim/jstimezonedetect
The example I give from the post explains it like this "... if I’m a user in Australia, and I want to post something at 3:00 AM Chicago time, where the majority of my followers are, how do I calculate that accurately with JavaScript and send it up to the server?". Or, if I'm a user in Australia, but I want to display all my dates on the site like I'm a user in Chicago, how would I do that?
Take a look at the github page description for more info about the type of problems it can help with: http://sproutsocial.github.com/walltime-js/