I've done quite a bit of reading up on the subject of anonymous browsing to try and understand the technology on the conceptual level (ie not a coder). I'm aware that a properly configured Tor Browser Bundle along with restrictive NoScript settings will provide all the anonymity one needs (for most applications). However, I'm still curious about web proxy services as a lot of people I know still use them. Sites like anonymouse.org claim to offer complete anonymity in browsing- which I know is a complete exaggeration. However, what I was wondering is that if you were to use such a service which sends ads through as pop-ups, if those third party sites can compromise your privacy if cookies are enabled. Google for example (doubleclick) records the referring site along with a wealth of other information on any of its ads/analytics. At anonymouse for example, the URL of your visit is in plaintext (ie http://anonymouse.org/cgi-bin/anon-www.cgi/http://www.google.com/webhp?hl=en) So to sum things up, if you have cookies enabled, can third party advertisers see which sites you're visiting via the web proxy, and your actual IP?