The Many Ways Google Keeps Retooling Searcher's Interface
Meanwhile, Related searches and Related phrases show up at the bottom of the search box, features that Choi says "are certainly for increasing stickiness." The recently launched Site Search also boosts stickiness, as users can search within a brand's domain without leaving Google.com. And while Sitelinks have been in action for about two years, the giant has tweaked the number of links that actually appear in the past few months.
Choi also notes changes that Google has made to its China-facing site, including links on Google.cn for vertical searches (images, video, news and maps).