I just recently started using APRSdroid, and I've been just looking at maps, and I've noticed that in my area there are spots with just a cluster of stations on top of each other (in this specific case, in the middle of a lake??). I'm the car icon SW of the cluster.
What is going on? I've noticed a similar behavior another town over, but on land. Are people all just saying that's their location for personal reasons or is there another reason?