How to count visitor of one website from another website(which are on totally different domain)
<p>I want to count the visitor of a website(which is located totally different domain) from my website.Just like <a href="http://www.alexa.com/" rel="nofollow">Alexa is counting the visitor of all website</a> . How it can be done? Any idea or implementation please. Thanks in advance.</p>

<p>For all i clarify my question.</p>

<p><em>Suppose I want to count the visitor of www.yahoo.com. The total number of visitor, per day or per month etc. I know this will be very easy if i am the owner of www.yahoo.com, but if i have no connection with www.yahoo.com, then is it possible to know their visitor or any statistics?</em></p>
