Blocking Content With JetpacksMany of the most popular add-ons have a common function, they block content. Adblock Plus blocks ads, NoScript blocks scripts, and Ghostry blocks tracking software which uses images, scripts and other means to do their business. This is why I wrote a content-policy module for Mozilla’s Add-on SDK. The API is rough at the moment, and I plan to change that quite a bit. For the moment though we can t
