If you really want complete control of your browser, try for Firefox (the best browser security and privacy tool out there, though it takes some getting used to) and for Safari. The only problem is that they can disrupt the way sites themselves work.

As a final stopgap, use a privacy tool like to sweep your system for any lingering tracking information (as well as malicious spyware and trojans).

: Local Shared Objects are small text files saved by Adobe Flash that function much like cookies and often evade other privacy controls. These are extremely common on major Websites and frequently used for tracking.

: Visit the to restrict how Flash stores LSOs. In the Global Storage Settings panel on that page, deselect the Allow Third-Party Flash Content To Store Data On Your Computer (that will get rid of tracking). Setting the allowed storage space to 0 will let you manually approve any requests for a new LSO.