Hangi linke tıklasam son yazı çıkıyor

<div class="leftside">
<center><script type="text/javascript"><!--
google_ad_client = "pub-8517494144481075";
/* 200x90, oluşturulma 24.08.2010 */
google_ad_slot = "0776934294";
google_ad_width = 200;
google_ad_height = 90;
//-->
</script>
<script type="text/javascript"
src="http://pagead2.googlesyndication.com/pagead/show_ads.js">
</script></center>
<!-- KATEGORILER -->
<div class="block_t1 bvnav"><div class="dbtm">
<div class="dtop">
<h3>KATEGORİLER</h3>
</div>
<div class="dcont">
<ul>
<?php echo preg_replace('@\<li([^>]*)>\<a([^>]*)>(.*?)\<\/a>@i', '<li$1><a$2><b>$3</b></a>', wp_list_categories('echo=0&orderby=name&title_li=& depth=0')); ?>
</ul>
</div>
</div></div>
<!-- KATEGORILER -->

<!-- TAKVIM -->
<div class="block_t1 bcalen"><div class="dbtm">
<div class="dtop">
<h3>TAKVİM</h3>
</div>
<div class="dcont">
<div style="padding-left:25px;">
<?php get_calendar(true); ?>
</div>
</div>
</div></div>
<!-- TAKVIM -->


<!-- POPULER YAZILAR -->
<div class="block_t1 btnews"><div class="dbtm">
<div class="dtop">
<h3>POPÜler YAZILAR</h3>
</div>
<div class="listeleme">

<?php if (function_exists('get_highest_rated')): ?>
<ul>
<?php get_highest_rated(); ?>
</ul>
<?php endif; ?>
</div>
</div></div>
<!-- POPULER YAZILAR -->

<div class="block_t1 bpartn"><div class="dbtm">
<div class="dtop">
<h3>Son Yazılar</h3>
</div>
<div class="dcont">
<?php $posts = get_posts("numberposts=15&orderby=post_date&order= DESC"); foreach($posts as $post) : ?>
<ul>
<a href="<?php the_permalink(); ?>"><?php the_title(); ?></a>
</ul>
<?php endforeach; ?>
</div>
</div></div>

<!-- SON YORUMLAR -->
<div class="block_t1 bpartn"><div class="dbtm">
<div class="dtop">
<h3>SON YORUMLAR</h3>
</div>
<div class="dcont">
<?php if (function_exists('get_recent_comments')) { ?>
<ul>
<?php get_recent_comments(); ?>
</ul>
<?php } ?>
</div>
</div></div>
<!-- SON YORUMLAR -->

<!-- ARSIV -->
<div class="block_t1 barhives"><div class="dbtm">
<div class="dtop">
<h3>ARŞİVLER</h3>
</div>
<div class="listeleme">
<ul>
<?php wp_get_archives('type=monthly&limit=12'); ?>
</ul>
</div>
</div></div>
<!-- ARSIV -->

</div>