Customize the author slug in the permalink for author pages.
This plugin gives you full control over the permalinks for author pages. When using "pretty permalinks", by default URLs to author pages are structured:
With this plugin you can change the "author" part of these URLs into anything you like, for example:
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 plugin's homepage if you have any comments questions.