# Allow bots:
User-agent: *
Allow: /

# Bad bots:
User-agent: facebookexternalhit/1.1 (+http://www.facebook.com/externalhit_uatext.php)
User-agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.21 (KHTML, like Gecko) wpif Safari/537.21
Disallow: /