Using the Quick edit bookmarklet you can make any web site editable. Drag it to your favourites toolbar, click it and you get into edit mode. You can edit, copy and paste, delete and anything else. Hitting ESC will end edit mode.
You can use this to quickly edit web sites before taking a screenshot, for example.
Top comments (2)
Did a cleanup with the suggestions, also added z-index as Twitter was a pain.
very terse, I like