Template:NOINDEX/doc

Usage
This template adds  __NOINDEX__ , which may remove the page from some search engines and automatically categorizes pages in Category:Noindexed pages.

 __NOINDEX__  is disabled in article space and this template consequently has no effect there.

Parameters: |visible = yes : makes the template display a line of plain text to inform editors that the page is excluded from search engine indexing.

Namespace noindexing
On English Wikipedia the entire user talk namespace is automatically noindexed.