Earlier quoted context omitted.
I encourage Chrome users to go check the search history attached to their Google account. It exposes a lot of data that you didn't realize you were sending to Google (including letter-by-letter entry of search terms/urls) and may give a newfound respect for Firefox's separation, whether you personally care enough to make the switch or not.
I only use Chromium because it's supposed to not have the phone-home "features" that are in Chrome. ...or at least it's that they claim. EDIT: "they" being Google. http://blog.chromium.org/2008/10/google-chrome-chromium-and-...
I know that they are supposed not to misuse this information, but I would feel much better if they didn't receive it at all.