malnuer

Al activar este plugin, aparecerán tres nuevos campos en el formulario de configuración de “Enlaces permanentes”. 
Con estos campos podrás editar las palabras base (slug) que se usan para “Author”, “Search” y “Page”. 
Si los dejas en blanco, se usarán los valores por defecto de WordPress.

Autor Buscar Pagina

Permite editar las palabras base para "Autor", "Buscar" y "Página" desde "Ajustes > Enlaces permanentes"

microkid

This plugin gives you full control over the permalinks for author pages. When using “pretty permalinks”, by default URLs to author pages are structured:
http://www.example.com/author/author-name/
With this plugin you can change the “author” part of these URLs into anything you like, for example:
http://www.example.com/editorial/author-name/ 
http://www.example.com/crew/author-name/ 
http://www.example.com/members/author-name/ 
http://www.example.com/posts-by/author-name/
The plugin will also automatically change links throughout your site that point to author pages. The URLs of author feeds are also changed.
Visit the <a href="http://www.microkid.net/wordpress/author-slug/" title="Wordpress Plugin: Author Slug" rel="nofollow ugc">plugin’s homepage</a> if you have any comments questions.

Custom Author URL

Customize the author slug in the permalink for author pages.

Autor Buscar Pagina vs Custom Author URL