I have downloaded the LibX toolbar and will see how I get on with it.

I already have the delicious toolbar though I tend not to use it and it is currently hidden to save space on my browser.

I have the Facebook toolbar which allows me to quickly get to Facebook and also set status updates from my FireFox browser, see if I have any new messages, quick links, and a quick way to add photos to Facebook.  I can also quickly see everybody’s status updates at a glance without logging into Facebook.