Ron, these fellows are explaining it pretty well. Quick Reply is, well, quick.

The text entry window is right there, waiting for you to use it. It doesn't have all the bells and whistles of the WYSIWYG editor, but it is quick.

A feature I like is the quick-edit of a post. A quick editor window opens, you make your edits and then submit through AJAX, without waiting for another page load.

I'll see if I can work up a complete list of all the user changes that are now in place.