My Top Four FireFox addons

Cooliris Previews by The Cooliris Team

Cooliris Previews gives you the power to browse and share Web links and rich media instantly. Just mouse over any link, and the Cooliris preview window immediately appears to show you the content. No more clicking back and forth or losing your search context. To send a link, just click.

Answers by Asher Szmulewicz

1-Click Answers™ saves you time by instantly delivering the information you are looking for. Press Alt (or Option on a Mac) and click any word to get a quick, relevant definition or explanation, drawn from a collection of over 100 reference titles. You don't even need to highlight the word!

Download Statusbar by Devon Jensen

Manage your Internet downloads from a tidy toolbar, without the download window getting in the way of your Web browsing. Despite its compact size, Download Statusbar packs in more useful features than the standard download window. The fully customizable interface auto-hides when not in use, allowing full control without interruption.

( the status bar is at the left bottom corner of the screen )

Yoono by Yoono

Yoono instantly suggests similar sites, blog notes and people sharing the same interests while you are surfing, for each page you open.
Zero effort required - no more tagging, typing keywords or changing interface. Let Yoono bring you the best that others have discovered.
Yoono is easy, fun, addictive and designed for everyone.

As well, Yoono synchronizes your favorites automatically between computers and provides favorites export features in XBEL and OPML formats

This extension comes with a customizable toolbar that you can move almost wherever you like, and a sidebar that allows you to display at the same time another sidebar of your choice !

Please read our privacy policy page: http://www.yoono.com/privacy.html
Yoono does not store any personal user data except:
- the favorites which have not been declared "secret"
- data freely and optionally given to Yoono by the user himself.
This is the data filled-out in the User Profile tab, it can be edited any time.

In no case Yoono markets or communicates to a third party any personal data collected. The data that is stored is necessary for the service to function or as the sole object of improving the quality of the service provided to users.
Yoono does not record the browsing of its users but uses the URL of the page viewed by a user to send back suggestions to his browser.

USE FIREFOX BROWSER IN ORDER TO BE ABLE TO USE THESE ADDONS