O ideal é usar um ficheiro de tradução, mas se for só para alterar isso tens aqui o código:
<div id="blog_reactions">
<p>
<?php
$number = blog_get_reactions($post['seoname']);
if ($number) {
$number = count($number);
if ($number == 1)
// echo $number.' '.$lang['blog']['reaction'];
echo $number.' comentário';
else
// echo $number.' '.$lang['blog']['reactions'];
echo $number.' comentários';
}
else
// echo $lang['blog']['no_reactions']
echo 'Sem comentários';
?>
</p>
<?php
$reactions = blog_get_reactions($_GET['post']);
if ($reactions) {
foreach ($reactions as $reaction) {
?>
<div class="blog_reaction" id="reaction<?php echo $reaction['id']; ?>">
<p class="blog_reaction_name">
<?php
if (isset($reaction['website']))
echo '<a href="'.$reaction['website'].'">'.$reaction['name'].'</a>:';
else
echo $reaction['name'].':';
?>
</p>
<span class="blog_reaction_info">
<a href="#reaction<?php echo $reaction['id']; ?>"><?php echo $reaction['date'].' '.$lang['blog']['at'].' '.$reaction['time']; ?></a>
</span>
<p class="blog_reaction_message"><?php echo $reaction['message']; ?></p>
</div>
<?php
}
}