It is quite interesting watcing this unfold. As far as I can see, with Buzz Google made a number of fundamental errors:

- The team that developed Buzz are apparently all young, male, supergeeks - alpha early adopters - who have clearly supped deep of the Kool Aid that is Google approach to Privacy (ie its dead, get used to it), a la Eric Schmidt

- The Google Business Model wants to open up people's data as much as possible (hence the Schmidtian view on Privacy), and thus the service was built to grab and expose all data it sees as the default condition

- Google say Buzz product was user tested, but I suspect it was by the same demographic who built it rather than the people who may use it.

- Older, Wiser heads were clearly either not involved in the product review process, or overruled due to the above points' considerations.

So the stage is set for a service that is built to be massively abusive of user privacy.