Go to next page using the space bar. You can already scroll with it but with this extension it will also go to next page at the bottom of the page. Link pager reads the relation of the document from 'rel' attribute described on the web page, no configuration needed.
Funky unchangeable key bindings:
[Space] at bottom of the page or [Shift] + [Alt] + [Right]: Go to next page
[Shift] + [Space] at top of the page or [Shift] + [Alt] + [Left]: Go to previous page
[Shift] + [Alt] + [Up]: Go to upper page