gistfile1.txt

/**
 * Exclude asides from the blog queries.
 */
function mytheme_pre_get_posts( $query = false ) {

	// Bail if not home, not a query, not main query.
	if ( ! is_home() || ! is_a( $query, 'WP_Query' ) || ! $query->is_main_query() )
		return $query;

	// Exclude aside formatted posts from the main query.
	$query->query_vars['tax_query'] = array(
		array(
			'field'    => 'slug',
			'taxonomy' => 'post_format',
			'terms'    => array( 'post-format-aside' ),
			'operator' => 'NOT IN',
		),
	);

	return $query;
}
add_action( 'pre_get_posts', 'mytheme_pre_get_posts' );