Allows you to discourage search engines by url to prevent you from forgetting to turn the setting off when transfering databases between development and live instances.
Ask search engines not to index individual pages by a relative path - which means you can set every url no matter
it is a page, category listing or any custom view created by a plugin.
If your WordPress blog has a public login page, you probably don't want it to be indexed by search engines. Noindex Login adds the robots "noindex" meta tag to your login page to keep search engines from indexing it. It also works on your registration and lost password pages.