Having items you have searched for on Amazon show up on other sites.
If you have a Amazon account and look at items or search for items they can be added to a wish list on Amazon. Anyone can search e-mail address or name, or even search your Facebook friends
to find what you have done and share to the world.
Amazon Defaults the wish list to Public and this is open for anyone to see/use.
To Change it click on List settings
Under Privacy tab click on Private and Submit.