Tu n'as rien qui interdit aux moteurs de recherche de regarder ton site dans ce .htaccess

Bonjour à tous,
Je suis nul en php. Je possède un site de petites annonces et je devrai rewriter le fichier .htaccess qui suit afin d'autoriser les moteurs de recherche d'entrer. Comment faire? Avec tous mes remerciements d'avance.

## Uncomment this if FollowSymLinks is not already enabled on your server
#Options +FollowSymLinks

## Use mod rewrite
## Comment the line below if RewriteEngine is already enabled on your server
RewriteEngine On

## Uncomment the line below and change the path if your script is installed
## in a different path than the root folder of your domain

#RewriteBase /

RewriteRule ^index.html index.php [nc]
RewriteRule ^recent_ads.html recent_ads.php [nc]
RewriteRule ^register.html register.php [nc]
RewriteRule ^pre-register.html pre-register.php [nc]
RewriteRule ^login.html login.php [nc]
RewriteRule ^logout.html logout.php [nc]
RewriteRule ^favourites.html favourites.php [nc]
RewriteRule ^contact.html contact.php [nc]
#RewriteRule ^advanced_search.html advanced_search.php [nc]
RewriteRule ^listings.html listings.php [nc]
RewriteRule ^pre-submit.html pre-submit.php [nc]
RewriteRule ^([0-9]+)-([^\/]+)?/content.html$ content.php?id=$1 [nc,qsa]
RewriteRule ^([0-9]+)-([^\/]+)/index.html$ index.php?category=$1 [nc,qsa]
RewriteRule ^([0-9]+)-([^\/]+)/details.html$ details.php?id=$1 [nc,qsa]
RewriteRule ^([^\/]+)/([^\/]+)/([^\/]+)/recent_ads.html$ recent_ads.php?page=$1&order=$2&order_way=$3 [nc,qsa]
RewriteRule ^([0-9]+)-([^\/]+)/user_listings.html$ user_listings.php?id=$1 [nc,qsa]
RewriteRule ^([0-9]+)-([^\/]+)/([^\/]+)/([^\/]+)/([^\/]+)/user_listings.html$ user_listings.php?id=$1&page=$3&order=$4&order_way=$5 [nc,qsa]
RewriteRule ^([^\/]+)/([^\/]+)/([^\/]+)/favourites.html$ favourites.php?page=$1&order=$2&order_way=$3 [nc,qsa]
RewriteRule ^([0-9]+)-([^\/]+)/store.html$ store.php?id=$1 [nc,qsa]
RewriteRule ^([0-9]+)-([^\/]+)/([^\/]+)/([^\/]+)/([^\/]+)/store.html$ store.php?id=$1&page=$3&order=$4&order_way=$5 [nc,qsa]

RewriteCond %{REQUEST_URI} ^(.*)(/listings.html)(.*)$ [NC]
RewriteCond %{SCRIPT_FILENAME} !-f
RewriteCond %{SCRIPT_FILENAME} !-d
RewriteRule (.*) ./listings.php?$1