Change "Enter your (website) username." I am setting up a personal site in Drupal, and at the Login page it will have "Enter your Josh Mustillo username." Is it possible to change the "Josh Mustillo" to something else like "Enter your Username"?

(Domain is www.joshmustillo.com),
You could do that by implementing the hook_form_alter, in your custom module.

function MODULE_form_alter(&amp;$form, &amp;$form_state, $form_id) {
  if($form_id == 'user_login') {    
    $form['name']['#description'] = t('Enter your username');
  }
}