We have most of our apps in navigation category. Our apps were in top 25 fro almost a year until Sep 2012. Then the downfall began we were dropped to 75-100 ranking. Now from last a few weeks, I have seen that many top ranking apps( which were not good anyways) are no more in top 100 in navigation category. Our apps have also comeback and have started ranking higher between (25-50). Has anyone seen this behavior? Apple is changing its search algorithm back to what it had initially? Any thoughts?