Gist.Github Preview detects URLs in a users email that link back to code snippets hosted on the popular Github code sharing service. When the gadget detects on of these URLs it loads a preview of the code snippets directly into the users Gmail interface. The user is then free to review the code, comment back to the sender, or copy the code out for use in the their development project, all without leaving their email interface. The gadget simplifies the process of sharing a reviewing code and reduces the clicks and open windows necessary for the user to accomplish their work.
"Gists at Github.com provide a great way to share version controlled code snippets." says Justin Driscoll, the gadget's developer, "With this gadget installed, whenever I receive an email message containing a Gist URL, I can quickly review all the files right inline with the original message and without having to navigate away from the page. I think it's a great addition for any Gmail user who works with code on a regular basis."