Almost perfect Rated 3 out of 5 stars

Firstly, like several people have mentioned, you need to make the button moveable! Annoys me no end having to have it beside my search bar.

Also, it'd be great if there were more subtle capture options than just the full page. Perhaps the default should be full page, but there should be drop-down options to capture just what's currently in the viewport, or just a portion of the current page (specified by cropping it out). Screengrab does this really nicely.

This review is for a previous version of the add-on (1.0.3). 

1. 【Drag and drop the extension icon to other places.】 The new firefox addon SDK https://jetpack.mozillalabs.com/ doesn't support drag and drop feature yet. The addon team is working on it and once this feature is available, we will integrate it in all our addons. Thanks for your patience.
2. We will provide the menu item as an option later.

Thanks.