Why do I use NedStat here? Two reasons: (1) Many people are genuinely curious about the info, including me; and (2) for those not familiar with how much of your personal info gets transmitted while you're on the Net, I hope it's a harmless wake-up call. NedStat doesn't have secret backdoor ways to collect more detailed information on you or your web-surfing habits (and if you're wondering, they don't give me any more info than anyone else -- I see the same stats you do, nothing more). But not all such services are so benign. This isn't the place to give you a crash course on Internet privacy and security, but I strongly suggest that everyone learn as much as you can; there's a lot of good material out there to educate you.
If you're paranoid, or just want to stay as private as possible when visiting here again, just bookmark or note the URL of the main index page, so you can bypass this opening screen -- it's the only page that's linked to any statistics.