User-agent: Googlebot
Disallow: /posting.php
Disallow: /search.php
Disallow: /privmsg.php
Disallow: /login.php
Disallow: /rss.php
Disallow: /phpBB2/
Disallow: /report.php
Disallow: /*sid=
# ^ Google extension to the robots.txt standard

User-agent: *
Disallow: /posting.php
Disallow: /search.php
Disallow: /privmsg.php
Disallow: /login.php
Disallow: /rss.php
Disallow: /report.php
Disallow: /phpBB2/