It's not my job to look out for Google's interests. "You're the product, not the customer," remember? Why should I concern myself with the quality of Google's product?
The way I see it, there are three options:
* Accept it and keep using Google
* Use DuckDuckGo, Bing or some other search engine
* Struggle to use hacks like Scroogle
Tracking users is a key part of Google's business model. If you use their services, they're going to track you and target ads to you. And they're going to keep implementing things like throttling to frustrate sites like Scroogle.
there's also http://www.googlesharing.net/ which is an anonymizing proxy service, but i think it's firefox specific.
personally, i just stopped using their other services (i tried disconnect, but vaguely remember various issues when otherwise logged in) - as far as i know, they don't track you when you're not logged in (to be more sure i also use ghostery - that, together with disconnect, prevents a lot of tracking).
[i mean, more exactly, that i have heard nothing about them updating personal information with data from searches when not logged in; i am not talking aggregate info like typical searches from geoip locations]