Here's how to adding new variable for the Author Pane (Follow links). The demo is on Bersosial.com.
function template_preprocess_author_pane(&$variables) {
 $variables['user_follow'] = '';
 $uid = $variables['account']->uid;
 $name1 = 'twitter';
 $name2 = 'googleplus';
 $twitter = db_query('SELECT path FROM {follow_links} WHERE uid = :uid and name = :name', array(':uid' => $uid, ':name' => $name1))->fetchField();
 $googleplus = db_query('SELECT path FROM {follow_links} WHERE uid = :uid and name = :name', array(':uid' => $uid, ':name' => $name2))->fetchField();
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 if (!empty($twitter)) {
    $twitter = '
';
    $variables['user_follow'] .= $twitter;
 }
 if (!empty($googleplus)) {
    $google = '
';
    $variables['user_follow'] .= $google;
 }
}
After that add the following code in author-pane.tpl.php or advanced-forum.naked.author-pane.tpl.php.
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Module used are Follow, Author Pane, and Advanced Forum.