title: Which data source is preferable for Google Maps, KML or JSON?
body: <p>I totally see the benefits of JSON, pull over a lightweight array of data to stuff into my Google Maps (and template through to show a list of the points as well). I've heard a lot of talk about KML.</p>
  
  <p>Which is the preferable way to pull points into Google Maps, JSON || KML? My primary concern is performance, but also breadth of features that could potentially improve the map.</p>