1. Avoid Google and any/all of its products at any cost. If you're not familiar with Eric Schmidt's quote on privacy, look it up on www.startpage.com.
2. This means not using Chrome, Droid OS, Youtube, google.com, and always always using noscript to block any/all google scripts that run on pretty much EVERY webpage in existence. googlesyndication.com and google-analytics.com are huge privacy invaders, as well as everything involved with google. Seriously, avoid them like the plague.