Originally Posted by anexsia

I use GWT and have Google Analytics on every single one of my blogs and the only thing I've noticed is most of the time my blogs GAIN traffic with every Panda update. There's only one blog that I don't use Analytics on and it uses Piwik...ironically that's the blog that has lost a huge amount of traffic. You even have the option to NOT share information for Google to use for each individual site your add to Analytics.

BUT every webmaster is free to believe what they want and if they don't want to use Google Analytics than that's cool...you just gotta do whatever works for you and keep doing it. I can't say it doesn't affect your Google traffic because no one knows but Google, but in my own experience it hasn't hurt my traffic from Google whatsoever.