Index: wp-signup.php
===================================================================
--- wp-signup.php	(revision 34793)
+++ wp-signup.php	(working copy)
@@ -123,17 +123,26 @@
 
 	<div id="privacy">
         <p class="privacy-intro">
-            <label for="blog_public_on"><?php _e('Privacy:') ?></label>
-            <?php _e( 'Allow search engines to index this site.' ); ?>
-            <br style="clear:both" />
-            <label class="checkbox" for="blog_public_on">
-                <input type="radio" id="blog_public_on" name="blog_public" value="1" <?php if ( !isset( $_POST['blog_public'] ) || $_POST['blog_public'] == '1' ) { ?>checked="checked"<?php } ?> />
-                <strong><?php _e( 'Yes' ); ?></strong>
-            </label>
-            <label class="checkbox" for="blog_public_off">
-                <input type="radio" id="blog_public_off" name="blog_public" value="0" <?php if ( isset( $_POST['blog_public'] ) && $_POST['blog_public'] == '0' ) { ?>checked="checked"<?php } ?> />
-                <strong><?php _e( 'No' ); ?></strong>
-            </label>
+            
+            <fieldset>
+              <label><?php has_action( 'blog_privacy_selector' ) ? _e( 'Site Visibility' ) : _e( 'Search Engine Visibility' ); ?></label>
+              <legend class="screen-reader-text"><span><?php has_action( 'blog_privacy_selector' ) ? _e( 'Site Visibility' ) : _e( 'Search Engine Visibility' ); ?> </span></legend>
+              <?php if ( has_action( 'blog_privacy_selector' ) ) : ?>
+	              <input id="blog-public" type="radio" name="blog_public" value="1" <?php checked('1', get_option('blog_public')); ?> />
+	              <label for="blog-public"><?php _e( 'Allow search engines to index this site' );?></label><br/>
+	              <input id="blog-norobots" type="radio" name="blog_public" value="0" <?php checked('0', get_option('blog_public')); ?> />
+	              <label for="blog-norobots"><?php _e( 'Discourage search engines from indexing this site' ); ?></label>
+	              <p class="description"><?php _e( 'Note: Neither of these options blocks access to your site &mdash; it is up to search engines to honor your request.' ); ?></p>
+	              <?php
+	              /** This action is documented in wp-admin/options-reading.php */ 
+	              do_action( 'blog_privacy_selector' );
+	              ?>
+              <?php else : ?>
+	              <label for="blog_public"><input name="blog_public" type="checkbox" id="blog_public" value="0" <?php checked( '0', get_option( 'blog_public' ) ); ?> />
+	              <?php _e( 'Discourage search engines from indexing this site' ); ?></label>
+	              <p class="description"><?php _e( 'It is up to search engines to honor this request.' ); ?></p>
+              <?php endif; ?>
+              </fieldset>
         </p>
 	</div>