WordPress wp_title blank on index page

Question

I\'m new to WordPress and just installed version 3.3.1.

I did some googling regarding this question and found some answers but they were relevant to version 2.7 and

Answer 1

I use this method in my WordPress site

//Meta Header
if ( ! function_exists( 'dima_wp_title' ) ) :
  function dima_wp_title( $title ) {

    if ( is_front_page() ) {
      return get_bloginfo( 'name' ) . ' | ' . get_bloginfo( 'description' );
    } elseif ( is_feed() ) {
      return ' | RSS Feed';
    } else {
      return trim( $title ) . ' | ' . get_bloginfo( 'name' ); 
    }

  }
  add_filter( 'wp_title', 'dima_wp_title' );
endif;