title: googleAPI: URL shortner gives error on request for shorten the longUrl
body: <p>Hi i have been using google shortner for a month &amp; have tried shortening urls near about 50 times &amp; were successful. but today when i tried shortening url for the same task, it showed me the error</p>
  
  <pre><code>object(stdClass)#9 (1) { 
  ["error"]=&gt; object(stdClass)#11 (3) { 
  ["errors"]=&gt;  array(1) { [0]=&gt; object(stdClass)#12 (4) { 
  ["domain"]=&gt; string(11) "usageLimits" 
  ["reason"]=&gt; string(23) "dailyLimitExceededUnreg" 
  ["message"]=&gt; string(76) "Daily Limit for Unauthenticated Use Exceeded.         Continued use requires signup." 
  ["extendedHelp"]=&gt; string(36) "https://code.google.com/apis/console" } 
  } 
  ["code"]=&gt; int(403) 
  ["message"]=&gt; string(76) "Daily Limit for Unauthenticated Use Exceeded.   Continued use requires signup." } 
   }
  </code></pre>
  
  <p>I am not able to understand what it is???
  i have signed up already &amp; using shortner service for a month. please help me out with this problem</p>