Read the Original Article at http://www.informationweek.com/news/showArticle.jhtml?articleID=231000146
If you're on the Home Screen and want to search your iOS device quickly, just hit the Home Button. If you're in an app, the system will return you back to the Home screen, where hitting the button once more will take you right to Spotlight Search.
No matter what page you are viewing on the iPad or any iOS device, just hit the Home Button once or twice to bring it up. What a time saver.