Google announced a couple of further changes to Gmail Buzz, in relation to the privacy concerns people voiced in the past days. Following people will now require a more explicit, not so easy to miss opt-in action. Furthermore, Google Reader and Picasa sites won't be auto-connected to your Buzz account now (even though they're public). Third, Gmail will also include a new Buzz settings tab, in which you can (among other things) completely disable your Buzz account.