User-agent: Googlebot
Disallow:

# Qwant
User-agent: Qwantify
Disallow:

# MSN et Bing
User-agent: MSNBot
Disallow:

# DuckDuckGO
User-agent: DuckDuckBot
Disallow:

# Yahoo
User-agent: Slurp
Disallow:

# autres
User-agent: *
Disallow: /