Foursquare has made a great change. They’re moving from Google Maps to Open Street Maps.
This is not only a simple map change. Google Maps and Open Street Maps they both have different approaches.
While Google is a Foursquare has choose Open Street Map because:
It’s a crowd-sourced global atlas, and it’s kind of amazing! It’s like Wikipedia for geography.) We love the idea of open data, and were happy to try it out. (Source)
Now, my two cents; is it going to penalize Foursquare in any particular way from Google’s point of view?