My wife and her friend each got a 4S on opening weekend, and neither used Siri for longer that a few days. Nothing has changed since our last discussion on that here: http://news.ycombinator.com/item?id=3156590

Further, I think the difference between Siri's very-weak-AI capabilities and Apple's presentation of them as strong AI contribute to ridiculous stories like Siri being pro-life. If you really understand how Siri works, you understand how ridiculous that is. But if you believe the commercials, you might think Siri has a personality and makes judgments on things like abortion.