As far as Chrome talking to Google, the nice thing is that the browser is open source and anyone really curious can easily find out by browsing the source code, or even by setting up a tracking proxy. I am too lazy to do that today, so I am just going through what the hacker community at large has found. This is fairly in line with what Google readily admits. Chrome only sends the following information to Google.com:
- Search queries (generally, anything missing a TLD or containing spaces or special operators) entered into the address bar.
- Usage statistics, if the user opts in.
- Crash reports, following user prompt.
- The URL being visited if and only if the status code is 404 and the file length is less than or equal to 512 bytes.
- Automatic update check every 25 hours.
- Suspicious sites file downloaded every 30 minutes.
- Bookmarks. When you bookmark a page, the URL is sent to your Google Account - but, only if you are using a development build (Alpha or Beta) and have opted in to Bookmark Synchronization.