User-agent: psbot
Disallow: /

User-agent: Megalodon
Disallow: /

User-agent: ia_archiver
Disallow: /

# Wayback Machine
User-agent: archive_bot
Disallow: /
User-agent: ia_archiver
Disallow: /
User-agent: ia_archiver-web.archive.org
Disallow: /
User-agent: special_archiver
Disallow: /