During the Google’s fourth quarter financial conference call, Google’s Senior Vice President for Product Management Jonathan Rosenberg disclosed that the number of search queries that had displayed universal search results tripled in 2008. Universal search displays image, video, new, blog, and book results integrated with the standard website results. Rosenberg also said that Google had made 350 “search quality improvements” in 2008, with the “biggest addition” being the substantial increased size of the index. He also stated that mobile search traffic went up “substantially” during the year and peaked at the end of December. Finally, he said that ad coverage, the amount of queries that display ads and the number of ads displayed for those queries, had reached the level that it had been in the beginning of 2008 after having dipped during the year.