GitHub source code editor

Call me stupid, but that’s one awesome feature of GitHub that I haven’t noticed until now – source code editor.  When you view a file in your repository, there is an ‘Edit’ button on the toolbar above it.  That provides you with a simplistic text editor (with controls for tab/space indentation and wrapping), as well as a commit log fields.  Here is how it looks:

It’s not something that you would use for the majority of the coding of course, but it is a really nice option for quick edits all around.  Especially, if you have non-technical people in the project who edit README and other documentation files, and have no idea about Git at all.