FriendlyWP

/* SHORTCODE WHICH INSERTS CURRENT YEAR
 * usage: [year]
*/
add_shortcode('year', 'year_shortcode');
function year_shortcode() {
  $year = date('Y');
  return $year;
}

FriendlyWP

// REPLACE _* *_ WITH <STRONG> HTML IN WIDGET TITLES
// usage: _*This*_ word is bold
add_filter( 'widget_title', function($title) {
    $title = str_replace('_*', '<strong>', $title);
    $title = str_replace('*_', '</strong>', $title);
    return $title;
} );

FriendlyWP

// FILTER WORDPRESS SEO BY YOAST outputs in the WordPress control panel
// remove WP-SEO columns from edit-list pages in admin
add_filter( 'wpseo_use_page_analysis', '__return_false' );

// put WP-SEO panel at bottom of edit screens (low priority)
add_filter('wpseo_metabox_prio' , 'my_wpseo_metabox_prio' );
function my_wpseo_metabox_prio() {
  return 'low' ;                                
}

FriendlyWP

/**
 * Display specified content with a word limit
 * Can be used for excerpts, full content, etc.
 * In your theme file, use thus to display 40 words of the excerpt:
 *  $excerpt = get_the_excerpt(); 
 *  echo string_limit_words( $excerpt, 40 );
 *
 * @param string $string A variable containing the content you wish to display.
 * @param num $word_limit The number of words to display.
 * @return string Content limited to the number of words specified.

FriendlyWP

<?php
/*
Plugin Name: Posts 2 Posts List Widget
Plugin URI: http://friendlywebconsulting.com/
Description: Creates a widget to display posts connected via the Posts 2 Posts plugin by Scribu, found here: http://wordpress.org/extend/plugins/posts-to-posts/ 
Author: Michelle McGinnis
Author URI: http://friendlywebconsulting.com/
Version: 1.0.0-alpha
*/