Pre-iOS6 I would often go through and tap on each search result to look at the screenshots, assuming I didn't already know exactly what I was looking for, so this saves me a couple extra steps there. If I know exactly what I am looking for the search suggestions allow me to go directly to it. The one thing I do not like about the iOS6 App Store is the amount of horizontal scrolling on the iPhone. Not enough space for that to work well.