In http://plan9.bell-labs.com/robots.txt you will find:
User-agent: * Disallow: /
- [9fans] wiki... Ethan Grammatikidis
- Re: [9fans] wiki... pmarin
- Re: [9fans] wiki... smiley
- Re: [9fans] wiki... Ethan Grammatikidis
- Re: [9fans] wiki... hiro
- Re: [9fans] wiki... Ethan Grammatikidis
- Re: [9fans] wiki... Balwinder S Dheeman
- Re: [9fans] wiki... Ethan Grammatikidis
- Re: [9fans] wiki... dexen deVries
- Re: [9fans] wiki... smiley
- Re: [9fans] wiki... Balwinder S Dheeman
- Re: [9fans] wiki... erik quanstrom
- Re: [9fans] wiki... erik quanstrom
- [9fans] contrib(1) WAS: Re: wiki... smiley
- Re: [9fans] contrib(1) WAS: Re: ... erik quanstrom
