Rated 2 out of 5 stars

nobody needs a random sig that is changing every 30 secs....nice try...
random by click or shortcut, out of a selectable cookie-file...that would do the job. like "signature switch"
http://mozext.achimonline.de/signatureswitch_screenshots.php
belive it.

This review is for a previous version of the add-on (1.4).