Should we be allowed to edit comments?
I've never worked with Greasemonkey so I don't know how it works or if what I'm about to ask is possible, but I had a great idea for a script.
You know how you can post a comment in a hurry, only to later realize that you've posted your comment with a grammatical error? To correct the error you have to delete your comment and write it all over again (copy+paste if you're really smart).
Why not create a Greasemonkey script that adds an edit button to your comments that allows you to 'edit' your comment by deleting your original and pasting the original in the comment textbox?
Is this a stupid idea? Maybe, but I'm always doing this.
It would be nice if SO supported this automatically (feature request).