Sometimes posts are really long (in screen space, not necessarily words) to get to the bottom of, so a keyboard shortcut would be really helpful for marking the "Not Interested" box of a post. Is there an undocumented keyboard shortcut for the "Not Interested" button? If not, is there some other way to mark an item "Not Interested", without having to scroll all the way to the bottom of the item?
(Perhaps this is something doable with a Greasemonkey script.)
Note: I use Firefox.