Reduce Magento resources using meta tag robots. Copy to your version of local.xml

noindex.xml

<!--
SET META ROBOTS
-->
<!--
Search pages
-->  
    <catalogsearch_result_index>
      <reference name="head">
        <action method="setRobots"><meta>NOINDEX,NOFOLLOW</meta></action>
      </reference>
    </catalogsearch_result_index>

    <catalogsearch_advanced_result>
      <reference name="head">
        <action method="setRobots"><meta>NOINDEX,NOFOLLOW</meta></action>
      </reference>
    </catalogsearch_advanced_result>
    
    <catalogsearch_advanced_index>
      <reference name="head">
        <action method="setRobots"><meta>NOINDEX,NOFOLLOW</meta></action>
      </reference>
    </catalogsearch_advanced_index>
<!--
Customer Account
-->  
    <customer_account_login>
      <reference name="head">
        <action method="setRobots"><meta>NOINDEX,NOFOLLOW</meta></action>
      </reference>
    </customer_account_login>

    <customer_account_forgotpassword>
      <reference name="head">
        <action method="setRobots"><meta>NOINDEX,NOFOLLOW</meta></action>
      </reference>
    </customer_account_forgotpassword>

    <customer_account>
      <reference name="head">
        <action method="setRobots"><meta>NOINDEX,NOFOLLOW</meta></action>
      </reference>
      <remove name="catalog.compare.sidebar"/>
    </customer_account>

<!--
Checkout
-->
    <checkout_cart_index>
      <reference name="head">
        <action method="setRobots"><meta>NOINDEX,NOFOLLOW</meta></action>
      </reference>
    </checkout_cart_index>

    <checkout_onepage_index>
      <reference name="head">
        <action method="setRobots"><meta>NOINDEX,NOFOLLOW</meta></action>
      </reference>
    </checkout_onepage_index>

    <checkout_onepage_success>
      <reference name="head">
        <action method="setRobots"><meta>NOINDEX,NOFOLLOW</meta></action>
      </reference>
    </checkout_onepage_success>

    <checkout_onepage_failure>
      <reference name="head">
        <action method="setRobots"><meta>NOINDEX,NOFOLLOW</meta></action>
      </reference>
    </checkout_onepage_failure>
<!--
Contacts
-->
    <contacts_index_index>
      <reference name="head">
        <action method="setRobots"><meta>NOINDEX,NOFOLLOW</meta></action>
      </reference>
    </contacts_index_index>

<!--
Wishlist
-->
    <wishlist_index_index>
      <reference name="head">
        <action method="setRobots"><meta>NOINDEX,NOFOLLOW</meta></action>
      </reference>
    </wishlist_index_index>

    <wishlist_index_share>
      <reference name="head">
        <action method="setRobots"><meta>NOINDEX,NOFOLLOW</meta></action>
      </reference>
    </wishlist_index_share>

    <wishlist_shared_index>
      <reference name="head">
        <action method="setRobots"><meta>NOINDEX,NOFOLLOW</meta></action>
      </reference>
    </wishlist_shared_index>

<!--
Layered navigation
-->
    <catalog_category_layered>
      <reference name="head">
        <action method="setRobots"><meta>NOINDEX,FOLLOW</meta></action>
      </reference>
    </catalog_category_layered>
    
    <catalog_category_layered_nochildren>
      <reference name="head">
        <action method="setRobots"><meta>NOINDEX,FOLLOW</meta></action>
      </reference>
    </catalog_category_layered_nochildren>
    
<!--
Compare products page
-->

    <catalog_product_compare_index>
      <reference name="head">
        <action method="setRobots"><meta>NOINDEX,NOFOLLOW</meta></action>
      </reference>
    </catalog_product_compare_index>

<!--
Send to friend page
-->
    <catalog_product_send>
      <reference name="head">
        <action method="setRobots"><meta>NOINDEX,NOFOLLOW</meta></action>
      </reference>    
    </catalog_product_send>

    <sendfriend_product_send>
      <reference name="head">
        <action method="setRobots"><meta>NOINDEX,NOFOLLOW</meta></action>
      </reference>
    </sendfriend_product_send>

<!--
Review product page
-->
    <reviews>
      <reference name="head">
        <action method="setRobots"><meta>NOINDEX,NOFOLLOW</meta></action>
      </reference>
    </reviews>

    <review_product_list>
      <reference name="head">
        <action method="setRobots"><meta>NOINDEX,NOFOLLOW</meta></action>
      </reference>
    </review_product_list>

    <review_product_view>
      <reference name="head">
        <action method="setRobots"><meta>NOINDEX,NOFOLLOW</meta></action>
      </reference>
    </review_product_view>

<!--
Tag pages
-->

    <tag_list_index>
      <reference name="head">
        <action method="setRobots"><meta>NOINDEX,NOFOLLOW</meta></action>
      </reference>
    </tag_list_index>

    <tag_product_list>
      <reference name="head">
        <action method="setRobots"><meta>NOINDEX,NOFOLLOW</meta></action>
      </reference>
    </tag_product_list>

<!--
Rss pages
-->
    <rss_index_index>
      <reference name="head">
        <action method="setRobots"><meta>NOINDEX,NOFOLLOW</meta></action>
      </reference>
    </rss_index_index>

    <rss_index_nofeed>
      <reference name="head">
        <action method="setRobots"><meta>NOINDEX,NOFOLLOW</meta></action>
      </reference>
    </rss_index_nofeed>

    <rss_catalog_new>
      <reference name="head">
        <action method="setRobots"><meta>NOINDEX,NOFOLLOW</meta></action>
      </reference>
    </rss_catalog_new>

    <rss_catalog_special>
      <reference name="head">
        <action method="setRobots"><meta>NOINDEX,NOFOLLOW</meta></action>
      </reference>
    </rss_catalog_special>

    <rss_catalog_salesrule>
      <reference name="head">
        <action method="setRobots"><meta>NOINDEX,NOFOLLOW</meta></action>
      </reference>
    </rss_catalog_salesrule>

    <rss_catalog_tag>
      <reference name="head">
        <action method="setRobots"><meta>NOINDEX,NOFOLLOW</meta></action>
      </reference>
    </rss_catalog_tag>

    <rss_catalog_notifystock>
      <reference name="head">
        <action method="setRobots"><meta>NOINDEX,NOFOLLOW</meta></action>
      </reference>
    </rss_catalog_notifystock>

    <rss_catalog_review>
      <reference name="head">
        <action method="setRobots"><meta>NOINDEX,NOFOLLOW</meta></action>
      </reference>
    </rss_catalog_review>

    <rss_catalog_category>
      <reference name="head">
        <action method="setRobots"><meta>NOINDEX,NOFOLLOW</meta></action>
      </reference>
    </rss_catalog_category>