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GoogleGuy - 5:59 am on Aug 30, 2002 (gmt 0)
Then we make people deliberately opt-in for the advanced options. At that point, you pretty much have to assume that full disclosure + opt-in = informed consent from the user. Other than another window ("are you rilly rilly sure?"), there's not a lot else that we could do. The privacy people that I've talked to (GRC folks, etc.) seem to agree that's the right way to inform the user and get their consent..
cminblues, the point I'd make is that installing the toolbar is not required. People who do choose to install the toolbar get a new window with big red letters ("Please read this! It's not the usual yada yada") that fully and clearly explains the situation--if people want the PageRank for a site, they have to tell us the url. :)