title: When to use target="_self"
body: <p>When does the <code>_self</code> <a href="http://www.w3.org/TR/html4/types.html#type-frame-target" rel="noreferrer">frame target</a> becomes useful or worth using it?</p>
  
  <p>Isn't it (<em>always?</em>) the default behavior?</p>