If you're an Ubuntu user and you're using the default settings, each time you start typing in Dash (to open an application or search for a file on your computer), your search terms get sent to a variety of third parties, some of which advertise to you.
Ubuntu should protect user privacy by default. Since it doesn't, you can use the code to the left to disable the privacy invasive parts of Ubuntu.
Electronic Frontier Foundation
The new version of Dash that comes with Ubuntu 12.10 introduces more than just Amazon ads. It includes a new legal notice that you can see by clicking the "i" in the corner of Dash that states that by using Dash, you automatically agree to send your search term and IP address to a number of third parties.
Unless you have opted out, we will also send your keystrokes as a search term to productsearch.ubuntu.com and selected third parties so that we may complement your search results with online search results from such third parties including: Facebook, Twitter, BBC and Amazon. Canonical and these selected third parties will collect your search terms and use them to provide you with search results while using Ubuntu.