s re-used
 in scrolling lists.

 <p>
   If no tag id is set, Glide will use <a href="http://d.android.com/reference/android/view/View.html?is-external=true#setTag(java.lang.Object)" title="class or interface in android.view"><code>View.setTag(Object)</code></a>.
 </p>

 <p>
   Warning: prior to Android 4.0 tags were stored in a static map. Using this method prior
   to Android 4.0 may cause memory leaks and isn't recommended. If you do use this method
   on older versions, be sure to call <a href="../../../