Add Gravatar in WordPress Comments

49-comments-after.php

<li <?php echo $oddcomment; ?>id="comment-<?php comment_ID() ?>">
<?php if(function_exists('get_avatar')) { echo get_avatar($comment, '50'); } ?>
<cite><?php comment_author_link() ?></cite> Says:
<?php if ($comment->comment_approved == '0') : ?>
<em>Your comment is awaiting moderation.</em>
<?php endif; ?>
<br />

49-comments-before.php

<li <?php echo $oddcomment; ?>id="comment-<?php comment_ID() ?>">
<cite><?php comment_author_link() ?></cite> Says:
<?php if ($comment->comment_approved == '0') : ?>
<em>Your comment is awaiting moderation.</em>
<?php endif; ?>
<br />

49-comments.php

<?php if(function_exists('get_avatar')) { echo get_avatar($comment, '50'); } ?>