Alıntı
User-agent: *

Disallow: /*?
Disallow: /?ref=
Disallow: *?
Disallow: ?
ve .htaccsess

Alıntı
RewriteCond %{THE_REQUEST} \?(ref=.*)?\ HTTP [NC]
RewriteRule .? http://www.siteAdi.com%{REQUEST_URI}? [R=301,L]