I would not touch the google toolbar with a bargepole and resist all attempts to add it to my browser. If you have Firefox 3.5 then you don't need it and it takes up valuable space. Firefox has numerous add-ons that enable you to block adverts, pop-ups and unwanted flash files seamlessly and is a more accurate browser than any version of Internet Explorer. I write my own CSS (cascading style sheets) and the non-conformance of IE to the universal standards is a pain.