The pentadactyl add-on (used to be vimperator) for FF does this, ]] for next, [[ for previous. I believe it first checks for 'rel=' links, then links that conta

The pentadactyl add-on (used to be vimperator) for FF does this, ]] for next, [[ for previous. I believe it first checks for 'rel=' links, then links that contain 'prev', 'back', '<<' or similar snippets. Hopefully this catches on, and we can use this instead of every site trying to have its own keyboard shortcuts (j/k or left/right or z/x/c, that last one being especially stupid for non-qwerty typists).