since they are disabling this, it would be nice if they provided a URL that you could hot-link to that just gets served from CDN and only updates every 5 minutes or so.
best of both worlds: they dont need to have it hit their full stack on every request, and I can make a jsperf using <script src="//cdn.github.com/documentcloud/underscore/master/underscore.js">
That is similar to what github pages is. The limitation is just that the file must be in github pages and you can only get to the current file in the gh-pages branch.
There are a couple of ways that it can be worked around for jsfiddle (assuming you use the "External Resources" tab). One is to pull the file in through an AJAX request and then eval the result. The other is for the backend to pull the script and serve it with headers stripped. The latter approach would be preferable, because then they can use a reasonable caching strategy and not drain github's resources.
It would, but it would create other problems also. If I were to link to a raw.github.com URL on HN, it would be disallowed because the Referer header would be "incorrect".
