I'm looking for something specific: a Firefox extension that will allow me to highlight text (i.e. add a yellow background to web text and save the highlight across sessions) using a keyboard shortcut.
I use caret browsing in Firefox on OSX to read articles online, and I'd like to be able to save highlights (and even annotations) using only the keyboard.
Does such an extension exist?
Update: TextMarker! kinda sorta does this, but does not save highlights across sessions, which makes it pointless.