关于调用整站相关文章不限栏目的方法如下：

这里高用相关文章，以关键字来匹配

<div class="hot mt1">
     <dl class="tbox">
           <dt><strong>相关文章</strong></dt>
               <dd>
                  <ul class="c1 ico2">
                       {dede:likearticle col='2' row='10' titlelen='42'}
                             <li><a href="[field:arcurl/]">[field:title/]</a></li>
                      {/dede:likearticle}
                  </ul>
               </dd>
     </dl>
</div>

再找到文件：\include\taglib\likearticle.lib.php
其实tags和关键字都可以匹配的，当然只能二选一

下面说不限栏目的修改
到 74行和84行，分别修改代码

$typeid = " And arc.typeid in($typeid) And arc.id<>$arcid ";

$typeid = " And arc.id<>$arcid ";

和

$typeid = " where arc.typeid in($typeid) And arc.id<>$arcid ";

$typeid = " where arc.id<>$arcid ";