wesbos

function is_blog () {
	global  $post;
	$posttype = get_post_type($post );
	return ( ((is_archive()) || (is_author()) || (is_category()) || (is_home()) || (is_single()) || (is_tag())) && ( $posttype == 'post')  ) ? true : false ;
}


Usage: 

 <?php if (is_blog()) { echo 'You are on a blog page'; } ?>

markjaquith

<?php
/*
Plugin Name: Disable plugins when doing local dev
Description: If the WP_LOCAL_DEV constant is true, disables plugins that you specify
Version: 0.1
License: GPL version 2 or any later version
Author: Mark Jaquith
Author URI: http://coveredwebservices.com/
*/

mikeschinkel

<?php
/*
Description: Adds a taxonomy filter in the admin list page for a custom post type.
Written for: http://wordpress.stackexchange.com/posts/582/
By: Mike Schinkel - http://mikeschinkel.com/custom-workpress-plugins
Instructions: Put this code in your theme's functions.php file or inside your own plugin. Edit to suite your post types and taxonomies. Hope this helps...
*/
add_filter('manage_listing_posts_columns', 'add_businesses_column_to_listing_list');
function add_businesses_column_to_listing_list( $posts_columns ) {
	if (!isset($posts_columns['author'])) {