Seldom. People, here, who claim they are using it all the time have more patience than I do. I do use the text to speech function when driving but Siri has really degraded in the Florida area over the last few months. You ask a question and nothing happens for over a minute and then she it "stupid".
Do not think it will work like you see n the ads, in fact there are several lawsuits claiming they kinda oversold Siri. Apple will claim it is Beta but that does not excuse it getting worst instead of better.
Yes, you can do all of that typing, using Google Maps, etc. This was just simple and easy. And I think that's the point. It doesn't necessarily replace anything, it just makes things easier to use.
And as I said in my original post, I had no intention of upgrading to the 4s and certainly didn't feel the need to do so simply for the sake of Siri. But it was very convenient and useful.
I started reading this thread before I left for work this morning, and I decided to give Siri another chance, because I had pretty much come to the conclusion that's not helpful.
As I attempted to engage with it today I was reminded why I don't use it. It has (for me) an odd rhythm; it's slow to respond. If I stop to take a breath while I'm dictating, it decides the message is complete and it cuts me off. (I like Dragon much better for dictation.) And it misunderstands my instructions often enough that in the end, it's not much of a time saver.
I will say that it comes in handy when I'm driving. But for the most part, eh.
I think this is truer than most people are willing to admit.... And it misunderstands my instructions often enough that in the end, it's not much of a time saver.