Google Maps for Android was updated to version 5.2 today, and the influence of mobile check-in services is becoming more and more apparent with the addition of four social location features.
While v5.1 added Latitude check-in functionality, Maps v5.2 brings the ability to post reviews of places to Twitter. Additionally, Google Latitude friends can now be pinged, beckoning them to check-in where you would like them to be (they will then receive a 'request'). In case you need a little inspiration for your next destination, the update also lets you search for a place to check-in from Latitude. Finally, Maps v5.2 allows you to explore hotspots in your area.