title: Store variables on WebService
body: <p>I remember coming across the web site service that allowed you to store variables with them, through XML/JSON communication.</p>
  
  <p>Simple Key/Value storage.</p>
  
  <p>It was a free service.</p>
  
  <p>I now happen to need it and I cannot dig it up.</p>
  
  <p>Can you suggest any such service?</p>
  
  <p><strong>~Update</strong>: Found this Amazon SimpleDB, but I need a free service to store Key/Value pairs</p>