An addition to Ubuntu 12.10 is the much disliked feature where when searching for anything in the Unity dash you are also shown related Amazon shopping results.

Besides privacy concerns (as your search query is being sent out to a server on the web when you are probably just wanting to find something on your computer) I find this feature pretty annoying as it clutters up the search results with products for sale.

The best way of changing this behaviour that works for me is to open up a terminal (ALT + CTRL + T) and enter this command to remove the shopping lens:

sudo apt-get remove unity-shopping-lens