Here is another great little tool aimed at trackers.
Ghostery™ sees the invisible web - tags, web bugs, pixels and beacons. Ghostery tracks the trackers and gives you a roll-call of the ad networks, behavioral data providers, web publishers, and other companies interested in your activity.
After showing you who's tracking you, Ghostery™ also gives you a chance to learn more about each company it identifies. How they describe themselves, a link to their privacy policies, and a sampling of pages where we've found them are just a click away.
Ghostery™ allows you to block scripts from companies that you don't trust, delete local shared objects, and even block images and
iframes. Ghostery puts your web privacy back in your hands.
http://www.ghostery.com
And don't forget me old favorite,
http://www.abine.com/dntdetail.php?
Sorted..