Google's recently update Google Voice Search is very useful and extremely fast. There are also a few tricks that can make the app even more useful. One trick is to ask Google Voice Search "how do you spell..." Google will quickly return the correct spelling of the word and speak the spelling aloud. Unlike Siri, Google Voice Search speaks the spelling back to you so you do not need to look at the screen. This trick is especially useful for people with dyslexia and people who are struggling spellers.