To me its just another peice of adware that there is no point of having installed on any system. Its like Yahoo pointless. Don't get me wrong the Google search engine is the best there is but i do not feel there is a need of a toolbar installed extra on top.
Actually, afaik, google's isn't adware or trackware. It's fine for people who still use IE...lol. Same w/ ebay's spoof-proof toolbar.