Google spent two years in developing Buzz, so many at Google use it, incl. Brin and Page.
That means it's very easy to find a Google engineer, see his list of contacts, and read all of their Buzz notes.
Want to keep up on their chat? Just click Follow and you'll get a feed of their internal discussions at Google.
This is a massive security hole into Google.
Most corporations will ban their staff from using Buzz.
