User-agent: Mediapartners-Google 
Disallow:

# Yahoo
User-agent: Slurp
Crawl-delay: 10
#Disallow:
Disallow: /wp-content/gallery/
Disallow: /wp-content/uploads/

User-agent: msnbot
Crawl-delay: 10
#Disallow:
Disallow: /wp-content/gallery/
Disallow: /wp-content/uploads/

User-Agent: *
Crawl-delay: 10
Disallow: /wp-content/gallery/
Disallow: /wp-content/uploads/
Disallow: /wp-content/blogs.dir