I wonder how much of all this security stuff around Buzz comes down to users having incorrect assumptions/knowledge about how applications and software handle p

I wonder how much of all this security stuff around Buzz comes down to users having incorrect assumptions/knowledge about how applications and software handle privacy. It seems like a poor choice to make an assumption that any given application (including one from Google) is going to be able to know what level of privacy you expect by default. Not to say that Google is blameless in this situation, as they could have done a lot more to educate potential Buzz users on privacy. However, it seems a common thread with the complains about Buzz and privacy start with someone making an incorrect assumption about how Google applications were handling their comments, shared feeds, friends, etc.