Maybe I found a bug in WP? You would think a separator of ” would mean no separator. But that’s not the case, WordPress adds space to your title with a ” separator.
The “right” parameter doesn’t work either, that simply moves the space to the other side.
Probably not a big deal, but in terms of SEO: Why stuff your title with non-essential information?
The ‘0′ allows you to trim the title. Otherwise WordPress would echo the title for you, before you could trim it.
<title><?php echo trim(wp_title(”,0)); ?></title>
(Edit this in header.php)