Would this work?

Ok I have setup a WP blog on a domain I purchased that seems to have been parked in the past. Google has indexed urls such as www.domain.com/?q=somerandomcategory and these pages that are getting indexed all load up index.php...like if you have mydomain.com/?q=test it will still show the home page so I think this is causing a duplicate penalty. I'm wondering if I should disallow those urls in htaccess, if it can be done or would this be ok in robots.txt:

Disallow: /?q=*

 

According to google you can add this line to your robots.txt to keep google from indexing all pages on your domain with a ? in the url

Disallow: /*?*

Code (markup):

 

Heres the robots.txt file that I use on my wordpress blog


User-agent: *
Disallow: /cgi-bin/
Disallow: /wp-admin/
Disallow: /wp-content/
Disallow: /wp-includes/
Disallow: /wp-admin/
Disallow: /page/
Disallow: /comments/
Disallow: /wp-
Disallow: /xmlrpc.php
Disallow: /contact.php
Disallow: /category/
Disallow: /?p
Disallow: /about/trackback/
Disallow: /wp-register.php
Disallow: /wp-login.php
Disallow: /*?*

 

Heres the robots.txt file that I use on my wordpress blog

User-agent: *
Disallow: /cgi-bin/
Disallow: /wp-admin/
Disallow: /wp-content/
Disallow: /wp-includes/
Disallow: /wp-admin/
Disallow: /page/
Disallow: /comments/
Disallow: /wp-
Disallow: /xmlrpc.php
Disallow: /contact.php
Disallow: /index.php
Disallow: /category/
Disallow: /about/trackback/
Disallow: /wp-register.php
Disallow: /wp-login.php
Disallow: /*?*

Code (markup):

 

Thanks...2 questions though

Wouldn't Disallow: /category/ disallow all urls with "category" in them eg...
domain.com/category/randompost/. If so why would you want to do that?

and disallowing index.php is basically so that domain.com and domain.com/index.php is not a duplicate?