I use firefox, and have the NoScript addon installed. I was looking at the scripts a lot of sites were using and one was google-analytics.com
I did some snooping, and research and found it monitors my usage of the web. that is spyware and i despise it.
I don't know why everyone blames google for spyware. Most browsers can be set to block spyware. I use IE7 and Firefox. Both have excellent spyware blockers and phishing blockers. I can set both to block whatever web site I want. None of this is googles fault. It's up to you to provide blockers. I can even stop adware. I don't see the issue. Google is just a search engine. I think it is the best one around.
Google is an excellent reliable site/ search engine. The company is just amazing and the services are fantastic. No wonder it is being the #1 search engine. As all great things it has a few flaws and that would be the advertisements that without WOT telling you it is safe could not actually be safe.