The new Toolbar for Firefox -- Google Toolbar 3 Beta, lets you access your bookmarks from any computer, add custom buttons to your Toolbar, and share web pages via Blogger, Gmail, and SMS. In addition to adding all the features from the Google Toolbar for IE, there's another one just for Firefox users —Now, you can  just click on a link to a document or spreadsheet and have it show up in your browser. 

Download: Google Toolbar for Firefox