RSS is a big deal, as anyone who’s subscribed to even a few feeds probably knows. Once you get past just a few feeds, though, it can quickly get overwhelming. RSS can leave you feeling inadequate, brain-dead and uninspired.
Link: ReadWriteWeb
How do I contact the owner of a website? How popular is my site on Digg or Delicious? What other websites are hosted on my web server ? Is my competitor using WordPress or Drupal? xyz.com is loading fast, what is the name of their web hosting company ? Is my blog accessible from China or Japan?
If you got questions like these in your mind, here are some of the most useful online tools to help you know each and every detail of any website on the planet.
Link: Labnol