title: New project with Maven2
body: <p>What's the recommended way to use Maven for a project that might grow large in the future? 
  I work with Eclipse and I see different approaches. Some use one project with no sub modules, and some Like mahout for example, have different sub-projects for different modules (e.g., core, math, examples, etc.). You can see it in this link:
  <a href="http://svn.apache.org/repos/asf/mahout/trunk/" rel="nofollow noreferrer">http://svn.apache.org/repos/asf/mahout/trunk/</a></p>
  
  <p>Is there any advantage preferring one over the other?</p>
  
  <p>Thanks.</p>