As an example consider emacswiki and the need to download .el files.
This page http://www.emacswiki.org/emacs/help-fns%2b.el has a green download button which the user Rt Clicks on in Firefox to get a "Save Link As" function. How to do something similar in Conkeror? It would be nice to have a both keyboard and mouse solutions.
You can find major Conkeror keys on this page.
In your case try to use s key and "choose" the link in Conkeror.