Thread:Project:Support desk/Remove the discussion tab from the wiki./reply (8)

E.g. something like this:

User-agent: * Disallow: /Talk

This disallows access to all pages starting with "Talk". If you use a different URL structure, maybe you want to adjust the line so that it fits your structure accordingly. Should you use something like Google Webmaster tools, you can check there to let Google tell you, if your lines work the way you want them to.