You realize that very visible people have worked for the CIA, right? Down through history some very well-known people, performers even, have spied for one country or another. The point isn't that people knew her name. The point is she was referenced as being employed for the CIA.
I think its bogus and that it is a Rove hunting party. Wilson said he was out to get Rove two years ago. You can't face the situation without understanding it, though. Lots of people knew who she was. Many thought she was a "consultant".
It isn't getting your name published that blows your cover, it is people knowing you are a spy. I don't believe she WAS a spy, frankly, and I don't believe there was a cover to blow here. Unless the who's who thing listed her as working for the CIA, though, it really doesn't prove anything.