You know what would be cool? If there was a Mozilla plug-in where I could click a button on any text field and it would pop up my favourite text editor (in my case, vim, a graphical vi clone) to edit the text field, instead of using the built-in editor.
The main reason I’d like to use my own editor is that the built-in editor is too mouse-intensive. I like vi because I can navigate with home-row keys.
The other reason is that I’m continually hitting vi command keys, which does entirely the wrong thing in Mozilla.
:wq