The same for me. My client was third since years on a competitive request on Google France. Suddenly, dropped to 20, then 30, then 40 positions... A drama here but some weeks before, I added his business to Google Places (Adresses in France).
Now he is on 1st place on the Google Adresses module and I observed that the visitors are more interesting in conversions.
Finally, maybe it is a better move ? thanks GG ? 
bernard
Sorry for my bad english.
