Google has recently upgraded the Local OneBox with additional pins that create a stronger visual point of entry to Maps.
In late January, Google’s upgrade of the Local Onebox led to a dramatic increase of traffic to to Google Maps. At the time I noted that:
They are still only showing three results. Why three? Why not 4 or 5 or even 6. The choice to stick with 3 denies many the opportunity for a listing.
This recent upgrade (I have no idea when it occurred as I have been busy catching up on business and my son’s basball upon our return from an extended vacation) doesn’t really solve this problem of the arbitrary placement of the top 3 listings but does create a strong impression that there are more listing worthy of note and should induce even more traffic to Google Maps. It is a subtle but welcome upgrade