title: Comparison of geospatial support for mongodb and postgis
body: <p>I am in the process of creating a consumer facing location based mobile app that will heavily need GIS support. I have narrowed down the databases to Postgres (PostGIS) and mongodb.</p>
  
  <p>I was wondering how someone who has experience with both would rate the geospatial support particularly in the area of:</p>
  
  <ol>
  <li>Performance</li>
  <li>Query expressibility </li>
  <li>Precision</li>
  </ol>
  
  <p>Please discuss pro and cons, gotchas and limitations.</p>