If you have looked at our source code you have probably seen tracker.js and geo.js being loaded as well as jquery. tracker.js collects anonymous information and adds it to our databases. geo.js colects geo-location information is you allow and also generates a fingerprint that identifies you computer and browser. Both uses jquery.
If you really want to surf the web anonymously you should go to your local library and use one of their computers. Do not use your email address or any other information while surfing the web. This is probably not the way you want to enjoy the web but it will give you a pretty anonymous footprint.
We will never sell your information (as anonymous as it is) to any third party, mainly because no one has ever asked for it and it has almost no value.
If you want to see what information we collect visit our WebStats page.
Good luck and have fun.