"If you want to keep Google from combining your Web History with the data they have gathered about you in their other products, such as YouTube or Google Plus, you may want to remove all items from your Web History and stop your Web History from being recorded in the future. Here's how you can do that." [Via]

Pro tip: Use Safari. I know it sounds silly, but open Safari right now, pop down the Safari menu, and learn to love the "Reset Safari" feature.
Seriously the most useful command I've ever seen in a browser aside from back and reload.
Obviously I'm talking about local history, but still.
You can have multiple Google accounts! Get a burner for all that fun Craigslist stuff you want to do!
Who's afraid to be service-y?
Seriously, thanks. I just did this six times, to check if I'd already done it.
I was one for six.