I just made this chrome extension for submitting issues to github, it also attaches the current tab's source and a screenshot. I've found it incredibly useful for linking a screenshot to an issue on the fly, or just quickly leaving an issue when it pops into my head. Thought you all might benefit, too.

If you check it out and find any bugs, help me out and open an issue https://github.com/cambridgemike/agile-testing-extension

Cheers, mike