User-agent: Googlebot
Disallow: *add_diff*
Disallow: *del_diff*
Disallow: *saleprice*
Disallow: *searchthis*
Disallow: /*add_diff
Disallow: /*del_diff
Disallow: /*saleprice
Disallow: /*searchthis

User-agent: MSNBot
Disallow: *add_diff*
Disallow: *del_diff*
Disallow: *saleprice*
Disallow: *searchthis*
Disallow: /*add_diff
Disallow: /*del_diff
Disallow: /*saleprice
Disallow: /*searchthis

User-agent: Slurp
Disallow: *add_diff*
Disallow: *del_diff*
Disallow: *saleprice*
Disallow: *searchthis*
Disallow: /*add_diff
Disallow: /*del_diff
Disallow: /*saleprice
Disallow: /*searchthis

User-agent: Teoma
Disallow: *add_diff*
Disallow: *del_diff*
Disallow: *saleprice*
Disallow: *searchthis*
Disallow: /*add_diff
Disallow: /*del_diff
Disallow: /*saleprice
Disallow: /*searchthis

User-agent: *
Disallow: /