title: When to use custom collection name
body: <p>In Magento, i know that you can do the following to get collections:</p>
  
  <pre><code>Mage::getResourceModel('module/model_collection');
  </code></pre>
  
  <p>and</p>
  
  <pre><code>Mage::getModel('module/model)-&gt;getCollection();
  </code></pre>
  
  <p>This all comes from the fact that you can provide your own custom name for collection</p>
  
  <p>for example: <code>Mage::getResourceModel('module/model_blahblahblah');</code></p>
  
  <p>so <code>getCollection</code> will automatically find that for you.</p>
  
  <p>My question is when would you actually want to use 'blahblahblah' instead of 'collection'</p>