Privacy Badger for Chrome is a free extension/add-on designed to learn to block numerous invisible trackers automatically.
Instead of keeping records of what to block, Privacy Badger for Chrome learns by observing which domains appear to be tracking you as you browse the Web.
Privacy Badger sends the Do Not Track signal (https://www.eff.org/issues/do-not-track) with your browsing. If trackers ignore your wishes, Privacy Badger for Chrome will learn to block them. It will initiate blocking once it encounters the same tracker on three different websites.
Besides automatic tracker blocking, Privacy Badger for Chrome can also remove outgoing link click tracking while on Facebook, Google, and Twitter.