Rated 5 out of 5 stars

Peter's 2.5 version works well for me in FF 7.0.1.

Note for Linux users: the Copy option on the Show Anchors menu writes the URL to CLIPBOARD instead of to PRIMARY, so you need to figure out how to paste from CLIPBOARD in your terminals. I'm using rxvt-unicode, where middle-button pastes PRIMARY and Meta-middle-button pastes CLIPBOARD. If your terminal doesn't support pasting from CLIPBOARD, you may need to install xsel or xclip, use one of those to dump CLIPBOARD onto a terminal, then re-copy it into PRIMARY.