spigists

/**
 * Obscure log in screen error messages
 */
function wpfme_login_obscure(){ return '<strong>Oh no... </strong>It looks like the user name and password combination that you entered is wrong.';}
add_filter( 'login_errors', 'wpfme_login_obscure' );

spigists

/**
 * Remove WordPress version number from header
 */
 remove_action('wp_head', 'wp_generator');

spigists

/**
 * Stop images from getting wrapped in the_content()'s <p> tags
 */
function remove_img_ptags($content){
  return preg_replace('/<p>\s*(<a .*>)?\s*(<img .* \/>)\s*(\/a>)?\s*<\/p>/iU', '\1\2\3', $content);
}
add_filter('the_content', 'remove_img_ptags');

spigists

/**
 * Replace the default WordPress dashboard footer text and link with a custom message
 */
function footer_admin () {
  echo 'Website designed and developed by <a href="http://go-spi.com/" target="_blank">Schmitt ProfiTools, Inc.</a>';
}
add_filter('admin_footer_text', 'footer_admin');

spigists

/**
 * Re-enable the built in WordPress links manager
 */
add_filter( 'pre_option_link_manager_enabled', '__return_true' );