Review for googlebar by yaoziyuan
Rated 5 out of 5 stars
Googlebar is great as the official Google Toolbar has ceased development for Firefox 5+.
However there is a minor bug in Googlebar: If you right-click any button on Googlebar in Firefox 5 for Windows, you see a popup menu with totally transparent background, which has low readability.
Also, note that there is an alternative extension "Googlebar Lite" which works as well and doesn't have the above minor issue.
To create your own collections, you must have a Mozilla Add-ons account.