Since most of these only concern "ad personalisation" and not data collection/sharing, I don't see the point of doing this. They're still collecting your data, only difference being now you're not being constantly reminded of it. For myself, I'd rather keep these turned on to get a sense of what data they are harvesting.
If they personalize/target an ad, isn't that using my info? I don't care if they gather and store my info, or if they take a tracking cookie and pass it to an ad-net, I want neither!
