Use robots.txt file to disallow this links.
eg.
User-agent: *
Allow: /
Disallow: /wp-admin/
Disallow: /wp-includes/
Disallow: /tag/
What about this instead?
Sitemap: http://www.example.com/sitemap.xml
# Google Image
User-agent: Googlebot-Image
Disallow:
Allow: /*
# Google AdSense
User-agent: Mediapartners-Google*
Disallow:
# digg mirror
User-agent: duggmirror
Disallow: /
# global
User-agent: *
Disallow: /cgi-bin/
Disallow: /wp-admin/
Disallow: /wp-includes/
Disallow: /wp-content/plugins/
Disallow: /wp-content/cache/
Disallow: /wp-content/themes/
Disallow: /trackback/
Disallow: /feed/
Disallow: /comments/
Disallow: /category/*/*
Disallow: */trackback/
Disallow: */feed/
Disallow: */comments/
Disallow: /*?
Allow: /wp-content/uploads/
Use
Sitemap: http://www.example.com/sitemap.xml
# Google Image
User-agent: Googlebot-Image
Disallow:
Allow: /*
# Google AdSense
User-agent: Mediapartners-Google*
Disallow:
# digg mirror
User-agent: duggmirror
Disallow: /
# global
User-agent: *
Disallow: /cgi-bin/
Disallow: /wp-admin/
Disallow: /wp-includes/
Disallow: /wp-content/plugins/
Disallow: /wp-content/cache/
Disallow: /wp-content/themes/
Disallow: /trackback/
Disallow: /feed/
Disallow: /tag/
Disallow: /comments/
Disallow: /category/*/*
Disallow: */trackback/
Disallow: */feed/
Disallow: */comments/
Disallow: /*?
Allow: /wp-content/uploads/