User-agent: Mediapartners-Google 
Disallow:

# /robots.txt file  http://www.pighealth.com/robots.txt
# you may not have blank lines in an individual record below - 
# cos they are used to delimit multiple records
#A Disallow line must have a User-agent line before it.
#As records are delimited by newlines,# there cannot be newlines between the User-agent
# and Disallow lines.
#Field names are case-sensitive - User-agent and Disallow must have capital initials.
#
User-agent: *
Disallow: /cgi-bin/
Disallow: /tmp/
Disallow: /log/
##########EXAMPLES 2#########
# The '*' in the User-agent field is a special value meaning "any robot", you cannot have 
# lines like "Disallow: /tmp/*" or "Disallow: *.gif"
# To exclude all files except one is awkward, as there is no "Allow" field. The easy
# way is to put all files to be
# disallowed into a separate directory, say "docs", and leave the one file in the level
#above this directory
#   Disallow: /~joe/docs/
##########EXAMPLES 2#########
#User-agent: webcrawler
#Disallow:
#
#User-agent: *
#Disallow: /logs
#
#The first line, starting with '#', specifys a comment 
#The first paragraph specifies that the robot called 'webcrawler'
# has nothing disallowed: it may go anywhere. 
##
#Two common errors:
#Regular expressions are not supported: instead of 
#'Disallow: /tmp/*' just say 'Disallow: /tmp'. 
#You shouldn't put more than one path on a Disallow line 
#(this may change in a future version of the spec)