Greasemonkey-a-like geared towards close integration with browser chrome; should eventually be possible to re-implement many major extensions using it.
Edit textareas using an external editor, because it's all text! Right click on a textarea, select "It's All Text!" and edit the text in the editor of your choice.
it merely sends the PHP file to the user as an application/x-ocelot-stream, which prompts Firefox to open a Save As dialog box.
If you send a stream of ocelots after a red panda, it better be running for its life, not stopping to open up a dialog with anyone.
Puns are not the lowest form of humour. MIME is.
Greasemonkey 0.2.5 includes an XMLHttpRequest convenience method that works across domains. Oohhhh yeah.