The appearance of Dragon Dictation, which lets you speak into your phone to enter text, caused quite a stir, especially given that it's being made available initially for free. You can read Ken Burkhalter's blog post that gives a helpful review. However, note that Dragon Search is also available, and also free. It lets you do voice searches rather than having to tap in your search terms. Plus, it searches a variety of sources, including Google, Yahoo, Bing, Wikipedia, Wikipedia, YouTube, Twitter, and iTunes. The ratings and reviews are actually much higher than Dragon Dictation.