Index: robots.txt
===================================================================
RCS file: /cvs/drupal/drupal/robots.txt,v
retrieving revision 1.13
diff -u -p -r1.13 robots.txt
--- robots.txt	29 Nov 2008 09:33:50 -0000	1.13
+++ robots.txt	20 Feb 2009 03:06:43 -0000
@@ -59,3 +59,7 @@ Disallow: /?q=user/password/
 Disallow: /?q=user/register/
 Disallow: /?q=user/login/
 Disallow: /?q=user/logout/
+# Additional Rules
+Disallow: /*sort=
+Disallow: /*?filter
+Disallow: /*&filter