WordPress MU

Dear Forum,

I'm very new here as are most. And I apologize in advance if this is the wrong place to ask my question (if you can give me some direction, that would be great!).

My most basic question is this: is MU designed to create unlimited stand alone blogs for unlimited users with no connection between the individual blogs, or is MU intended to created unlimited contributors to a main admin controlled blog?

Thank you in advance.

"MU designed to create unlimited stand alone blogs for unlimited users with no connection between the individual blogs"

This one.

See wordpress.com? You're making a site like that.