The best! Rated 5 out of 5 stars

The best Firefox extension, and excellent tutorial
http://amb.vis.ne.jp/mozilla/scrapbook/files/ScrapbookTutorial-1.1.pdf

A extensão mais útil que existe.
Ótimo tutorial, vale a pena ler.

This review is for a previous version of the add-on (1.2.0.8).