I love the features they don't pump. I found one thanks to Marc Ambinder's column on The Week:
Siri can now read you any bit of text you select. Accessibility --> Speak Selection --> (On), Voices --> Select. And choose the speed, too. Then, when you select text, you move the black bar to the left until you see the "Speak" selection.
I just tried this, and it rocks. I just listened to a blog post on www.zerohedge.com. Not only could I learn something hands-free, the whole experience was like the greatest xtranormal video of all time: Quantitative Easing Explained.
And if your iPhone goes black and won't respond to anything, see my most popular post of all time.