On: how to upvote without losing your place on the page

you could try this: http://userscripts.org/scripts/show/8951

Wow. This greasemonkey script replaces explicit links with xmlhttprequests. Could we do something similar with the reply link as well? That's been a long-standing feature request when submitting reddit comments.

My horizons for what users can contribute to websites have dramatically broadened.

Done. http://userscripts.org/scripts/show/9027

Now can you get submit to inline the newly-added comment without reloading? :)

[edit] Agh, it already does. This totally rocks.