We've never had a use for Google Instant Search on mobile, so we didn't expect much when Google's Instant Previews invaded the smartphone realm as well. You know what? They're actually surprisingly useful. Instead of trying to cram additional information into Google's already-crowded mobile website, Instant Previews adds a little magnifying glass next to most every result, and clicking on the magnifier brings up a series of cached thumbnails of each page that you can scroll through. It's a very v
