Forking with the Edit Button
github.com
github.com
you would know this if you had read the page
>When you are done with your edit, we will write your change into your new fork automatically and send you to the pull request page so you can tell the owner of the repository.
Maybe the solution here in the mean time is to use this with the bespin bookmarklet(https://bespin.mozillalabs.com/bookmarklet/) or something.
It's not as seamless as if it was on Github, but impressively powerful.
[1] http://mozillalabs.com/skywriter/2011/01/18/mozilla-skywrite...