Alexa Top Sites Captcha and Tor Block Monitoring

<p>The project aims to monitor and track down in detail how the Alexa Top 500 websites behaves to different Tor clients, whether a particular website is blocking the Tor exit node completely, or throwing <code>Captchas</code> or is it disabling certain functionalities <em>(login, posting etc.)</em>. Would also be looking in for similar observations for all tor exit nodes or any peculiar case <em>(region-wise, specific exit node, etc.)</em>. The project also focuses on how often do these webpages return <code>Captchas</code> or even block the pages thereby limiting the users to browse internet freely and anonymously.</p>