http://rzuwtppveur6yh3n2in7trmddgrkuhww4eb2znykgjwubihfpljiyuid.onion
In particular, your local ISP is in the position to build a complete profile of your Internet usage.
In addition, every server in the Internet that can see any of the packets can profile your behavior. The aim of Tor is to improve your privacy by sending your traffic through a series of proxies.