functions.php

<?php

/**
 * Add a Blog Sidebar to Genesis
 * 
 * @author Bill Erickson
 * @link http://www.billerickson.net/code/blog-sidebar-genesis/
 */

 
/**
 * Register Blog Sidebar
 * 
 * @author Bill Erickson
 */
function be_register_blog_sidebar() {
	genesis_register_sidebar( array( 'id' => 'blog-sidebar', 'name' => 'Blog Sidebar' ) ); 

}
add_action( 'genesis_setup', 'be_register_blog_sidebar', 20 );

/**
 * Display Blog Sidebar
 * 
 * @author Bill Erickson
 */
function be_blog_sidebar() {

	if( !( is_home() || is_category() || is_tag() || is_singular( 'post' ) ) )
		return;
	
	remove_action( 'genesis_sidebar', 'genesis_do_sidebar' );
	if( function_exists( 'ss_do_sidebar' ) )
		remove_action( 'genesis_sidebar', 'ss_do_sidebar' );
		
	dynamic_sidebar( 'blog-sidebar' );
}
add_action( 'genesis_sidebar', 'be_blog_sidebar', 5 );