Facebook's default 'privacy' settings expose the majority of your personal information to the entire internet. If Buzz's gaff was bad, then this is atrocious.
Don't use this site unless you're prepared to check the settings to ensure your details are safe.
Lately there has been a lot of spam and my friend even picked up a 'blue screen of death' virus from facebook! Your privacy is not what you would expect, either. There are a lot of 'applications' that turn out to be nothing but spam or worse! This site is not as secure as it should be!