User-agent: Twitterbot
Allow: *

User-agent: facebookexternalhit/1.1
Allow: *

User-agent: Facebot
Allow: *

User-agent: facebookexternalhit/1.1 (+http://www.facebook.com/externalhit_uatext.php)
Allow: *

User-agent: Slackbot-LinkExpanding 1.0 (+https://api.slack.com/robots)
Allow: *

User-agent: Slack-ImgProxy 0.19 (+https://api.slack.com/robots)
Allow: *

User-agent: Slackbot 1.0(+https://api.slack.com/robots)
Allow: *

User-agent: *
Disallow: /
