Q: Is Jetpack competitive against the Greasemonkey add-on or is the goal really something different? A: They are different. Jetpack is informed by the success of Greasemonkey. Greasemonkey is awesome. It’s an add-on that makes it easy to make the current page you are looking at better. Jetpack is about making the entire browser better. We plan on adding support for Greasemonkey scripts to Jetpack to allow them work even better together. - Сова, удочеряющая носок