title: How to implement geo-based data store and computation?
body: <p>Well, let me explain this briefly:</p>
  
  <p>1.I want to build a website that provides location based services, like <a href="http://fireeagle.yahoo.net/" rel="nofollow noreferrer">http://fireeagle.yahoo.net/</a> .</p>
  
  <p>2.I guess most of these services have something do with longitude and latitude.</p>
  
  <p>3.Is there any particular database/datastore/data structures fit well for such apps? I mean easy to store longitude, latitude and easy to compute or easy to use.</p>
  
  <p>I am new to this and any feedbacks are welcome</p>