even better – to get the shortcodes to work in the normal wordpress category description:
open geodir-listing.php and at about line 50 you will find:
<div class="term_description"><?php _e( wpautop(wptexturize($current_term->description)), GEODIRECTORY_TEXTDOMAIN ) ; ?></div>
change it to:
<div class="term_description"><?php _e( wpautop(wptexturize(do_shortcode($current_term->description))), GEODIRECTORY_TEXTDOMAIN ) ; ?></div>
and you should be able to run shortcodes.
Kevin