http://www.ghacks.net/2015/05/14/how...et-in-firefox/
Disable Pocket serviceQuote:
Mozilla has added Pocket, a third-party "save for later" service
1. Open Firefox
2. Type about:config in the address bar, press enter
3. In the Search bar, type browser.pocket.enabled
4. Double-click browser.pocket.enabled to set value false
