Pushing Category and Publish Date to Google Analytics

If you’re printing your script inline (i.e. not in an external file), you can use PHP to dynamically output the JavaScript argument:

<script>
    _gaq.push( 'setCustomVar', 3, 'pubDate', '<?php the_time( 'Ym' ) ?>', 3 );
</script>

See the PHP manual for date arguments, which will explain why I’ve used Ym.