[jacquesm]

See, that is exactly what I meant. That's not a 'full opt-out', that is just an opt out from having your search results personalized.

Tracking will merrily continue.

And if you fall for that what do you think the general public will do?

[ajkohn]

Well, using both the links above (though I botched the first link to ad preferences) you can opt-out of the the remarketing/display cookie and the search cookie.

For those that get to the Ad Preferences page the stats are pretty interesting.

http://www.mattcutts.com/blog/clarifying-valleywag-comments/

The general public when presented with this doesn't seem to have such a drastic reaction.