Do you want to add extra fields to your author profiles in WordPress?
You can easily do that by adding this code to your functions.php file:
function wpe_new_contactmethods( $contactmethods ) {
// Add Twitter
$contactmethods['twitter'] = 'Twitter';
//add Facebook
$contactmethods['facebook'] = 'Facebook';
return $contactmethods;
}
add_filter('user_contactmethods','wpe_new_contactmethods',10,1);

You can now display these fields in your author template like this:
<?php echo $curauth->twitter; ?>