Drag a link up or down to open it in a foreground or background tab with the Super DragAndGo Firefox extension.
Super DragAndGo makes links draggable around a page and onto existing tabs for easy opening. Download an image on the web by simply dragging it to a clear area on the page, too. I put together a short screencast preview to check it out before you install. Free, Firefox required. Thanks, Jess!
Screencast: See Super DragAndGo in action
Install Super DragAndGo [Mozilla Updates]