JS-Kit (later, Echo) commenting tool will end Oct. 1st, 2012. That’s a pity: it was widely-used for many years.
Luckily, Disqus stepped in and added the ability to export JS-Kit comments and import them into Disqus. They added a page to guide you through the JS-Kit / Echo export to XML and then import into Disqus comments. Go to Disqus Export/Import.
If you’re looking for how to export or save your JS-Kit Echo comments, try Disqus.