In the old days -- before last September -- you had to wait until you typed your entire search term and hit Return before you saw any results. No longer. Now results start popping up while you're still typing, along with suggested completions for your search term. That's Google Instant. Google estimates that the change saves users two to five seconds per search, or about 3.5 billion seconds a day globally. Whether it helps or hurts advertisers isn’t entirely clear. Certainly, it changes things for advertisers with regard to the terms they need to bid on.