Seems like everyones arguement in this thread isn't about the actual toolbar but what it might lead to. Which is the proverbial slippery slope, and for the educated people in the crowd, they know that the slippery slope doesn't actually exist.
http://www.fallacyfiles.org/slipslop.html
So basing arguements on something that is logically invalid, isn't exactly the way to prove a point.